{"acronym":"35C3-oio","aspect_ratio":"16:9","updated_at":"2026-04-14T02:30:04.113+02:00","title":"35C3: Open Infrastructure Orbit","schedule_url":"","slug":"congress/35C3/oio","event_last_released_at":"2019-12-01T01:00:00.000+01:00","link":"","description":"","webgen_location":"congress/35C3/oio","logo_url":"https://static.media.ccc.de/media/congress/35C3-oio/logo.png","images_url":"https://static.media.ccc.de/media/congress/35C3-oio","recordings_url":"https://cdn.media.ccc.de/congress/35C3-oio","url":"https://api.media.ccc.de/public/conferences/35C3-oio","events":[{"guid":"0f38a37f-f2fe-5a70-9640-2614c3c9e050","title":"10 Tops \u0026 Flops für den erfolgreichen Aufbau einer Community wie Freifunk München","subtitle":null,"slug":"35c3oio-46-10-tops-flops-fr-den-erfolgreichen-aufbau-einer-community-wie-freifunk-mnchen","link":"https://pretalx.35c3oio.freifunk.space/35c3oio/talk/3ME8XJ/","description":"Freifunk München wird getrieben vom Freie Netze München e.V.. Jeder Verein hat Höhen und Tiefen. Um ein stabiles Team zu halten sind einige Basics notwendig.\n\n1. Wir reden über die Größten Erfolge.\n2. Über die Durststrecken ... ohne Admins.\n3. Politik die mal will oder nicht in München und Bayern.\n4. NixOS ist genial aber kaum einer kann es.\n5. Segmentierung = Fluch oder Segen?\n6. Warum traut sich keiner an Babel?\n7. Virtualisierung Proxmox oder OpenNebula?\nFragen....","original_language":"deu","persons":["Daniel Fussy"],"tags":["35c3-oio","46","2018"],"view_count":432,"promoted":false,"date":"2018-12-29T21:00:00.000+01:00","release_date":"2019-12-01T01:00:00.000+01:00","updated_at":"2026-03-28T16:00:08.390+01:00","length":1441,"duration":1441,"thumb_url":"https://static.media.ccc.de/media/congress/35C3-oio/46-hd.jpg","poster_url":"https://static.media.ccc.de/media/congress/35C3-oio/46-hd_preview.jpg","timeline_url":"https://static.media.ccc.de/media/congress/35C3-oio/46-hd.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/congress/35C3-oio/46-hd.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/35c3oio-46-10-tops-flops-fr-den-erfolgreichen-aufbau-einer-community-wie-freifunk-mnchen","url":"https://api.media.ccc.de/public/events/0f38a37f-f2fe-5a70-9640-2614c3c9e050","conference_title":"35C3: Open Infrastructure Orbit","conference_url":"https://api.media.ccc.de/public/conferences/35C3-oio","related":[{"event_id":6543,"event_guid":"48ed6dea-e67d-4866-8c35-318e9d892363","weight":1},{"event_id":8201,"event_guid":"3712beb2-12f2-552a-b831-b0cd5e4527ab","weight":3},{"event_id":8203,"event_guid":"93e378a5-3b6b-4a8d-890c-fe3b890428c8","weight":1},{"event_id":8210,"event_guid":"a5cd48d1-6d8c-5be9-a17b-f229db0e3689","weight":1},{"event_id":8218,"event_guid":"ee10b98c-7538-5354-b486-66e363cbb44f","weight":1},{"event_id":8221,"event_guid":"75a12486-070c-539d-b4a9-a9495c86b78d","weight":4},{"event_id":8223,"event_guid":"96770b24-6aa8-53b1-9766-cc72e2e179c1","weight":1},{"event_id":8224,"event_guid":"21ff694c-e8f9-5aed-94bc-0efa78f93132","weight":1},{"event_id":8226,"event_guid":"175f6e41-1cf4-5733-b656-5c990453fe2c","weight":6},{"event_id":8227,"event_guid":"8cde9720-65a3-5463-b9e8-aa8bfb6416b4","weight":4},{"event_id":8231,"event_guid":"fef79e66-cab6-5fc4-b31e-dc802c46f277","weight":5}]},{"guid":"8cde9720-65a3-5463-b9e8-aa8bfb6416b4","title":"State of the InterNAT - Freifunk Rheinland Backbone Update","subtitle":null,"slug":"35c3oio-35-state-of-the-internat-freifunk-rheinland-backbone-update","link":"https://pretalx.35c3oio.freifunk.space/35c3oio/talk/QHXBFG/","description":"Was war, was ist, was wird - ein Überblick über die Events der letzten Zeit und unsere Pläne für mehr Selbstverwaltung","original_language":"deu","persons":["Maximilian Wilhelm"],"tags":["35c3-oio","35","2018"],"view_count":1019,"promoted":false,"date":"2018-12-29T19:00:00.000+01:00","release_date":"2019-12-01T01:00:00.000+01:00","updated_at":"2026-03-23T09:15:04.468+01:00","length":1963,"duration":1963,"thumb_url":"https://static.media.ccc.de/media/congress/35C3-oio/35-hd.jpg","poster_url":"https://static.media.ccc.de/media/congress/35C3-oio/35-hd_preview.jpg","timeline_url":"https://static.media.ccc.de/media/congress/35C3-oio/35-hd.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/congress/35C3-oio/35-hd.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/35c3oio-35-state-of-the-internat-freifunk-rheinland-backbone-update","url":"https://api.media.ccc.de/public/events/8cde9720-65a3-5463-b9e8-aa8bfb6416b4","conference_title":"35C3: Open Infrastructure Orbit","conference_url":"https://api.media.ccc.de/public/conferences/35C3-oio","related":[{"event_id":8203,"event_guid":"93e378a5-3b6b-4a8d-890c-fe3b890428c8","weight":3},{"event_id":8221,"event_guid":"75a12486-070c-539d-b4a9-a9495c86b78d","weight":5},{"event_id":8223,"event_guid":"96770b24-6aa8-53b1-9766-cc72e2e179c1","weight":5},{"event_id":8224,"event_guid":"21ff694c-e8f9-5aed-94bc-0efa78f93132","weight":5},{"event_id":8230,"event_guid":"fcf859a5-a914-5ac2-98c6-66af0328bd6f","weight":2},{"event_id":8231,"event_guid":"fef79e66-cab6-5fc4-b31e-dc802c46f277","weight":2}]},{"guid":"ea041ba6-e43b-52ea-9310-f36a7872abf5","title":"End-to-end encryption for secure, zero-knowledge file sync \u0026 share","subtitle":null,"slug":"35c3oio-68-end-to-end-encryption-for-secure-zero-knowledge-file-sync-share","link":"https://pretalx.35c3oio.freifunk.space/35c3oio/talk/BRRGEK/","description":"In this talk I'll detail the Nextcloud End-to-end Encryption design, going through the steps of creating the private/public key pair, encrypting and syncing it, encrypting files and uploading them, adding devices to the trusted circle and so on.\n\nNextcloud's E2EE is designed to protect user data from the server. The goal was to let users sync and share folders (and their contents) as easily as possible without the server ever having the ability to access the data. That rules out a web interface and has other limitations, but that's the price for knowing your server can't spy on you. It isn't and was never meant for ALL your data, as you should use a solution purely focused on E2EE instead! The nice features of Nextcloud, from online document editing to public sharing, will work on all your files except those you put in E2EE folders.\n\nThe talk is reasonably technical - it doesn't delve in to code or algorithms but sticks to the general design and flow of data: how do we create and share public keys, how do we get the private key on another device without the server being able to access it, how do we encrypt files and share them and so on.","original_language":"eng","persons":["Jos Poortvliet"],"tags":["35c3-oio","68","2018"],"view_count":246,"promoted":false,"date":"2018-12-27T17:00:00.000+01:00","release_date":"2019-11-30T01:00:00.000+01:00","updated_at":"2026-01-10T15:30:19.675+01:00","length":2424,"duration":2424,"thumb_url":"https://static.media.ccc.de/media/congress/35C3-oio/68-hd.jpg","poster_url":"https://static.media.ccc.de/media/congress/35C3-oio/68-hd_preview.jpg","timeline_url":"https://static.media.ccc.de/media/congress/35C3-oio/68-hd.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/congress/35C3-oio/68-hd.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/35c3oio-68-end-to-end-encryption-for-secure-zero-knowledge-file-sync-share","url":"https://api.media.ccc.de/public/events/ea041ba6-e43b-52ea-9310-f36a7872abf5","conference_title":"35C3: Open Infrastructure Orbit","conference_url":"https://api.media.ccc.de/public/conferences/35C3-oio","related":[{"event_id":1728,"event_guid":"3poSeUcpc6woNaI5dhATcQ","weight":1},{"event_id":2291,"event_guid":"2f68e356-6c3f-4034-9640-c06d717ed96b","weight":1},{"event_id":3677,"event_guid":"46f1b3cf-5cd4-4a6c-bb07-6ead116c2475","weight":1},{"event_id":4606,"event_guid":"5400c892-12e3-4199-b976-a68b0b54c159","weight":1},{"event_id":5070,"event_guid":"a87a0521-6b12-5dca-851a-c32a13cc4581","weight":1},{"event_id":6440,"event_guid":"899041a1-b437-59aa-b752-03212d7d3c05","weight":1},{"event_id":6453,"event_guid":"bf490104-3595-5d88-a4b1-f39899e768f7","weight":1},{"event_id":6454,"event_guid":"2963ebe9-6499-5d17-9f2f-0c3f31db5738","weight":1},{"event_id":6461,"event_guid":"f42631ca-d3ec-5baf-8642-85c0b1cadc89","weight":1},{"event_id":6469,"event_guid":"2cc78749-a8c0-5c48-83ac-ec0c40c1b41d","weight":1},{"event_id":6494,"event_guid":"9a91d92b-0691-46b2-ba73-112bc598342f","weight":1},{"event_id":6504,"event_guid":"b4850756-d05b-5689-818b-b4b3b233244e","weight":1},{"event_id":6540,"event_guid":"0a1a58a4-7700-502b-b8f2-405f3e42c1bc","weight":1},{"event_id":6555,"event_guid":"208a0d4d-bd15-5795-82aa-563e270001d5","weight":1},{"event_id":6560,"event_guid":"7956605c-adae-5563-ab8c-c97b6781fefa","weight":1},{"event_id":6589,"event_guid":"afa54ff4-f64e-5426-b822-50342f5d4ce9","weight":1},{"event_id":7988,"event_guid":"f1b2d665-2521-4f00-a8ba-b3e6b55d78ca","weight":1},{"event_id":8187,"event_guid":"456fb60c-5ce7-11e8-be47-1fb2912eb8104","weight":1},{"event_id":8203,"event_guid":"93e378a5-3b6b-4a8d-890c-fe3b890428c8","weight":1},{"event_id":8205,"event_guid":"be0461ef-ad9f-51cb-be5a-f6dd3adf091e","weight":1},{"event_id":8206,"event_guid":"760fa3e5-8307-5d44-9248-bc28b510bbe0","weight":1},{"event_id":8221,"event_guid":"75a12486-070c-539d-b4a9-a9495c86b78d","weight":1},{"event_id":8222,"event_guid":"465d4b06-089c-571d-af98-5d3c87cf53a3","weight":1},{"event_id":8224,"event_guid":"21ff694c-e8f9-5aed-94bc-0efa78f93132","weight":1}]},{"guid":"175f6e41-1cf4-5733-b656-5c990453fe2c","title":"F-Droid:Pimp your Android(-fork) with the best Free Software apps","subtitle":null,"slug":"35c3oio-74-f-droid-pimp-your-android-fork-with-the-best-free-software-apps","link":"https://pretalx.35c3oio.freifunk.space/35c3oio/talk/UFZYAS/","description":"After a short introduction about software freedom on Android and Custom ROMs, I will demonstrate the Free-Software-App-Repository \"F-Droid\" with its anarchic and anti-censorship features. But as F-Droid offers you access to hundreds of Free-Software-apps and the sheer amount can be overwhelming in the beginning, in a next step I will also come up with the 10 or so most important apps (IMHO!).\n\nF-Droid is a Free-Software-App-only repository for Android systems and every Android-based fork and a powerful client that is designed to be resilient against surveillance and censorship. For its competitive character, F-Droid is not available via other \"app stores\" (like Google Play). You have to download it via your browser once but then it is easy to install and easy to use - and without the need for any account!\n\nOnce installed, F-Droid offers you access to hundreds of Free-Software-apps in compiled form and their sources. It also allows you to share (your) apps in mulitple ways, including offline methods and via onion repositories. You can add your own Free-Software-project to the official F-Droid catalogue or even set-up your own repositories and offer access via F-Droid.\n\nUnfortunately, F-Droid misses any kind of rating system, so the sheer amount of available Free-Software-apps can be overwhelming in the beginning. So, after a short introduction about software freedom on Android and Custom ROMs, I will demonstrate F-Droid with its anarchic and anti-censorship features. Next, I will come up with the 10 or so most important apps (IMHO!).\n\n**Update:** [Slides by Erik Albers, CC-BY-SA](https://web.3rik.cc/Nextcloud13/index.php/s/zRqYoA3TQb97mrP)","original_language":"eng","persons":["Erik Albers"],"tags":["35c3-oio","74","2018"],"view_count":1436,"promoted":false,"date":"2018-12-29T17:00:00.000+01:00","release_date":"2019-12-01T01:00:00.000+01:00","updated_at":"2026-03-27T10:45:09.088+01:00","length":3358,"duration":3358,"thumb_url":"https://static.media.ccc.de/media/congress/35C3-oio/74-hd.jpg","poster_url":"https://static.media.ccc.de/media/congress/35C3-oio/74-hd_preview.jpg","timeline_url":"https://static.media.ccc.de/media/congress/35C3-oio/74-hd.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/congress/35C3-oio/74-hd.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/35c3oio-74-f-droid-pimp-your-android-fork-with-the-best-free-software-apps","url":"https://api.media.ccc.de/public/events/175f6e41-1cf4-5733-b656-5c990453fe2c","conference_title":"35C3: Open Infrastructure Orbit","conference_url":"https://api.media.ccc.de/public/conferences/35C3-oio","related":[{"event_id":1728,"event_guid":"3poSeUcpc6woNaI5dhATcQ","weight":1},{"event_id":2289,"event_guid":"a02daeb8-034a-45bb-998e-65d74ac29ea1","weight":2},{"event_id":6461,"event_guid":"f42631ca-d3ec-5baf-8642-85c0b1cadc89","weight":4},{"event_id":7066,"event_guid":"B7CBSq7u1UrdIoJSOaMcUQ","weight":1},{"event_id":7232,"event_guid":"526bc948-ab22-47e4-85df-36077b1b9d62","weight":1},{"event_id":8162,"event_guid":"24ee7975-3fc2-5ff4-b48c-98800630187f","weight":2},{"event_id":8205,"event_guid":"be0461ef-ad9f-51cb-be5a-f6dd3adf091e","weight":2},{"event_id":8206,"event_guid":"760fa3e5-8307-5d44-9248-bc28b510bbe0","weight":2},{"event_id":8216,"event_guid":"d69cd444-9df3-5e9b-a79f-b70b7b3ec98d","weight":2},{"event_id":8224,"event_guid":"21ff694c-e8f9-5aed-94bc-0efa78f93132","weight":1},{"event_id":8228,"event_guid":"0f38a37f-f2fe-5a70-9640-2614c3c9e050","weight":6},{"event_id":8230,"event_guid":"fcf859a5-a914-5ac2-98c6-66af0328bd6f","weight":5},{"event_id":8231,"event_guid":"fef79e66-cab6-5fc4-b31e-dc802c46f277","weight":4}]},{"guid":"b4fdd0df-1969-5b9e-9bf1-277eb1411d6b","title":"Wifi4EU - broken by technical specification","subtitle":null,"slug":"35c3oio-112-wifi4eu-broken-by-technical-specification","link":"https://pretalx.35c3oio.freifunk.space/35c3oio/talk/DAN8AX/","description":"With the Wifi4EU programm the EU is planning to spend 100 million € by 2020 to subsidise a centralized surveillance infrastructure for centers of public life in the EU. The talk will lay out how Wifi4EU is supposed to work both administratively and technically, where there are problems with the later and what is and can be done about it.\n\nSlides: https://zenodo.org/record/2527538#.XCUXplxKjIU\n\nWith the Wifi4EU programm [1] the EU is planning to subsidies the installation of free Wi-Fi with 120 million € until 2020. The installations are planned to be \"... free of charge, free of advertising and free from commercial re-use of data. ...\" [2] and aim \"... to equip every European village and every city with free wireless internet access around the main centres of public life. ...\" [1]\n\nUnfortunately the technical specifications implemented in the first call on the 7th - 9th of November [3] tell a different story. So far 42 Million € are planned to be spend in a flawed design.\n\nAmongst other problems they include:\n\n* requirements for a centralized authentification infrastructure - like eduroam [4] (FAQ 23),\n* inherent IT security problems - embedded snippets in the captive portals [4] (FAQ 26) and\n* proprietary standards - hotspot 2.0. [4] (FAQ 27)\n\nFollowing a talk at the wireless community weekend in May this year [5] the talk will include:\n\n* a short introduction to the programm,\n* how it came to be,\n* what happend so far\n* the implications of the programm\n* what can be done to fix things.\n\nBesides contacting the european comission, several members of the european parlament and Klaus Landefeld of the eco [6] we were able to get members of the german Bundestag to get interested in the issue [7]. This led to a \"schriftliche Anfrage\" towards the Bundesregierung regarding the GDPR compliance of the authentification infrastructure, the situation is currently evolving.\n\nThe talk aims to inform about the current state of affairs and hoefully foster a discussion during the congress what can and should be done to prohibit the creation of yet another surveillance infrastructure and what a desirable public Wi-Fi infrastructure should look like.","original_language":"eng","persons":["Gregor Bransky"],"tags":["35c3-oio","112","2018"],"view_count":465,"promoted":false,"date":"2018-12-28T22:30:00.000+01:00","release_date":"2019-12-01T01:00:00.000+01:00","updated_at":"2026-02-05T23:15:07.757+01:00","length":2502,"duration":2502,"thumb_url":"https://static.media.ccc.de/media/congress/35C3-oio/112-hd.jpg","poster_url":"https://static.media.ccc.de/media/congress/35C3-oio/112-hd_preview.jpg","timeline_url":"https://static.media.ccc.de/media/congress/35C3-oio/112-hd.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/congress/35C3-oio/112-hd.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/35c3oio-112-wifi4eu-broken-by-technical-specification","url":"https://api.media.ccc.de/public/events/b4fdd0df-1969-5b9e-9bf1-277eb1411d6b","conference_title":"35C3: Open Infrastructure Orbit","conference_url":"https://api.media.ccc.de/public/conferences/35C3-oio","related":[{"event_id":668,"event_guid":"import-855601e93d880a1c1b","weight":1},{"event_id":8204,"event_guid":"98550357-b645-5683-9e6b-af20295d8fb1","weight":1},{"event_id":8206,"event_guid":"760fa3e5-8307-5d44-9248-bc28b510bbe0","weight":1},{"event_id":8210,"event_guid":"a5cd48d1-6d8c-5be9-a17b-f229db0e3689","weight":1},{"event_id":8212,"event_guid":"1e5859eb-8231-57c1-a0b4-083215923cd4","weight":1},{"event_id":8216,"event_guid":"d69cd444-9df3-5e9b-a79f-b70b7b3ec98d","weight":1},{"event_id":8220,"event_guid":"d3e546e5-f917-51ab-ab5e-a88c89699fcc","weight":1},{"event_id":8221,"event_guid":"75a12486-070c-539d-b4a9-a9495c86b78d","weight":1},{"event_id":8230,"event_guid":"fcf859a5-a914-5ac2-98c6-66af0328bd6f","weight":1}]},{"guid":"fcf859a5-a914-5ac2-98c6-66af0328bd6f","title":"Distributed DHCP","subtitle":null,"slug":"35c3oio-15-distributed-dhcp","link":"https://pretalx.35c3oio.freifunk.space/35c3oio/talk/AYUMLK/","description":"In mesh networks clients stay in separated ethernets. We developed and implemented a distributed dhcp algorithm so our mesh nodes now can serve dhcp directly while maintaining a consensus about leases of the same subnet.\n\nIn mesh networks, you can either run central dhcp servers or run them on the mesh nodes and have some administrative control about the served subnets, but those then scattered dhcp servers have no consensus\nabout the whole lease state and thus are not able to renew leases of roamed clients.\n\nOur algorithm, implemented in the ddhcpd addresses these problems:\nIt coordinates the served leases automatically, so you need no administrative control entity. And\nit allows roamed clients to renew and keep their IP addresses, through a forwarding mechanism.\n\nThe talk will be about the theoretical concept, the state of our implementation in ddhcpd and practical experience. \n\nDDHCPD: https://github.com/sargon/ddhcpd\nGluon Packet: https://github.com/sargon/gluon-sargon/tree/v2018.x/ddhcpd","original_language":"eng","persons":["Daniel Ehlers"],"tags":["35c3-oio","15","2018"],"view_count":1025,"promoted":false,"date":"2018-12-30T14:30:00.000+01:00","release_date":"2019-12-01T01:00:00.000+01:00","updated_at":"2026-04-04T02:15:05.201+02:00","length":2113,"duration":2113,"thumb_url":"https://static.media.ccc.de/media/congress/35C3-oio/15-hd.jpg","poster_url":"https://static.media.ccc.de/media/congress/35C3-oio/15-hd_preview.jpg","timeline_url":"https://static.media.ccc.de/media/congress/35C3-oio/15-hd.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/congress/35C3-oio/15-hd.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/35c3oio-15-distributed-dhcp","url":"https://api.media.ccc.de/public/events/fcf859a5-a914-5ac2-98c6-66af0328bd6f","conference_title":"35C3: Open Infrastructure Orbit","conference_url":"https://api.media.ccc.de/public/conferences/35C3-oio","related":[{"event_id":2078,"event_guid":"7156e245-d372-44d9-af0f-cbaa2e089f2c","weight":1},{"event_id":2634,"event_guid":"c153ecc0-6ead-46ea-9bc7-8d2b774c4a3f","weight":1},{"event_id":2958,"event_guid":"2714ce2a-4930-436e-b1e4-b461a6a79a15","weight":1},{"event_id":4606,"event_guid":"5400c892-12e3-4199-b976-a68b0b54c159","weight":1},{"event_id":6447,"event_guid":"1cc2086d-bfd7-53fd-8ae2-25efc204bcdf","weight":2},{"event_id":6469,"event_guid":"2cc78749-a8c0-5c48-83ac-ec0c40c1b41d","weight":1},{"event_id":8185,"event_guid":"a92717f6-8858-4162-9e72-9aedd4b830cb","weight":2},{"event_id":8205,"event_guid":"be0461ef-ad9f-51cb-be5a-f6dd3adf091e","weight":1},{"event_id":8226,"event_guid":"175f6e41-1cf4-5733-b656-5c990453fe2c","weight":5},{"event_id":8227,"event_guid":"8cde9720-65a3-5463-b9e8-aa8bfb6416b4","weight":3},{"event_id":8231,"event_guid":"fef79e66-cab6-5fc4-b31e-dc802c46f277","weight":3}]},{"guid":"21ff694c-e8f9-5aed-94bc-0efa78f93132","title":"Freifunkinstallationen in Flüchtlingsheimen - Erfahrungsbericht, Empfehlungen","subtitle":null,"slug":"35c3oio-34-freifunkinstallationen-in-flchtlingsheimen-erfahrungsbericht-empfehlungen","link":"https://pretalx.35c3oio.freifunk.space/35c3oio/talk/WA38FQ/","description":"Am Beispiel einiger Freifunkinstallationen in Flüchtlingsunterkünften in München wird anhand von Best Practices beschrieben, wie am besten vorzugehen ist. Budget, Ansprache der Verantwortlichen, technische Hürden, Umsetzung, Planung, Rückbau.","original_language":"deu","persons":["pkoerner81929"],"tags":["35c3-oio","34","2018"],"view_count":295,"promoted":false,"date":"2018-12-29T18:30:00.000+01:00","release_date":"2019-12-01T01:00:00.000+01:00","updated_at":"2025-04-10T22:45:03.706+02:00","length":1477,"duration":1477,"thumb_url":"https://static.media.ccc.de/media/congress/35C3-oio/34-hd.jpg","poster_url":"https://static.media.ccc.de/media/congress/35C3-oio/34-hd_preview.jpg","timeline_url":"https://static.media.ccc.de/media/congress/35C3-oio/34-hd.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/congress/35C3-oio/34-hd.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/35c3oio-34-freifunkinstallationen-in-flchtlingsheimen-erfahrungsbericht-empfehlungen","url":"https://api.media.ccc.de/public/events/21ff694c-e8f9-5aed-94bc-0efa78f93132","conference_title":"35C3: Open Infrastructure Orbit","conference_url":"https://api.media.ccc.de/public/conferences/35C3-oio","related":[{"event_id":4842,"event_guid":"581ccbad-4bbf-47a2-8845-f52278d61061","weight":1},{"event_id":6474,"event_guid":"f58a2b6d-bde0-483b-a8db-043ea9371cb6","weight":2},{"event_id":8221,"event_guid":"75a12486-070c-539d-b4a9-a9495c86b78d","weight":3},{"event_id":8223,"event_guid":"96770b24-6aa8-53b1-9766-cc72e2e179c1","weight":3},{"event_id":8226,"event_guid":"175f6e41-1cf4-5733-b656-5c990453fe2c","weight":1},{"event_id":8227,"event_guid":"8cde9720-65a3-5463-b9e8-aa8bfb6416b4","weight":5},{"event_id":8231,"event_guid":"fef79e66-cab6-5fc4-b31e-dc802c46f277","weight":2}]},{"guid":"75a12486-070c-539d-b4a9-a9495c86b78d","title":"Freifunk - The Next Generation","subtitle":null,"slug":"35c3oio-39-freifunk-the-next-generation","link":"https://pretalx.35c3oio.freifunk.space/35c3oio/talk/AVFU8A/","description":"FF-TNG aims at regrowing a local FF based network community by -on the one hand- going back to the 90's \"Bürgernetze\" Idea of free communication with others, (focus on VOIP, SMS, Chat, mail) but also by enabling the individual community member to offer services to others and the world (e.g. via DNS zone delegation to individual nodes). For true autonomy we envisage to not only use WIFI and VPN links but also include LORA-based communication to connect local nodes for low bitrate communication (chat, sms).\n\nA small group of FF-Munich people is currently developing a concept called FF-TNG \"Freifunk - The Next Generation\".\nIt came about after FFMUC had grown rapidly but a vast majority of FFMUC nodes is only using FF as a cheap pseudo-VPN gateway to the internet and after the rapid growth has put BATMAN to its limits making FF an only 'so-so' experience.\nThe concept aims at regrowing a local network community by -on the one hand- going back to the 90's \"Bürgernetze\" Idea of free communication with others, (e.g. VOIP, SMS, Chat) and -on the other hand- also by enabling the individual community member to offer services to others and the world (i.e. including DNS zone delegation to individual nodes and ipv6). For parts of the mesh we are looking at Babel. To get to a truly wide ranging individual network our concept includes LORA based communication for low-bitrate communication (Chat, SMS) to reach locations not reachable by simple 2.4 or 5GHz WIFI nodes.\nThe talk will be a ride through our first concept of how we think communication power can be put back to people so they can control their communication network. We hope for comments and input from the community - also of the kind \"das kannste schon so machen, aber dann isses halt kacke\"","original_language":"eng","persons":["Peter Buschkamp"],"tags":["35c3-oio","39","2018"],"view_count":522,"promoted":false,"date":"2018-12-29T12:30:00.000+01:00","release_date":"2019-12-01T01:00:00.000+01:00","updated_at":"2026-04-03T14:45:08.029+02:00","length":2913,"duration":2913,"thumb_url":"https://static.media.ccc.de/media/congress/35C3-oio/39-hd.jpg","poster_url":"https://static.media.ccc.de/media/congress/35C3-oio/39-hd_preview.jpg","timeline_url":"https://static.media.ccc.de/media/congress/35C3-oio/39-hd.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/congress/35C3-oio/39-hd.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/35c3oio-39-freifunk-the-next-generation","url":"https://api.media.ccc.de/public/events/75a12486-070c-539d-b4a9-a9495c86b78d","conference_title":"35C3: Open Infrastructure Orbit","conference_url":"https://api.media.ccc.de/public/conferences/35C3-oio","related":[{"event_id":1350,"event_guid":"import-bbaef39cd440f712fd","weight":1},{"event_id":1499,"event_guid":"import-96cc1f42578abdb340","weight":1},{"event_id":2922,"event_guid":"47cbd880-f500-4c44-b717-c11ed1da087d","weight":1},{"event_id":3643,"event_guid":"2689ebfe-0d84-4c88-9ea6-5cadad9d4fa4","weight":1},{"event_id":3662,"event_guid":"8c32309e-7136-4899-8ee4-1558e63ad137","weight":1},{"event_id":3695,"event_guid":"c300b194-2a85-4705-92aa-b4e789882303","weight":1},{"event_id":3763,"event_guid":"8fbee7ff-b50c-4310-af9d-d44794669f25","weight":1},{"event_id":3802,"event_guid":"a588243f-a16e-4298-9e66-d26fb949aaea","weight":1},{"event_id":3983,"event_guid":"f21bc737-27f2-5aed-be11-48c52f144f4d","weight":1},{"event_id":5056,"event_guid":"c0b4ff7f-7746-4d69-8d0f-b46a4be6a501","weight":1},{"event_id":5638,"event_guid":"bc119064-0b23-443b-82d4-55719d478151","weight":1},{"event_id":5963,"event_guid":"a82b651c-90ab-5427-96f5-41907efaab08","weight":2},{"event_id":6076,"event_guid":"68c30487-d434-4b4e-8df0-fb06aa4e8cdf","weight":1},{"event_id":6267,"event_guid":"33eee9b5-d818-40c2-967c-c401049cec60","weight":1},{"event_id":6348,"event_guid":"68bfa511-4aab-510b-a631-aa515976841e","weight":1},{"event_id":6411,"event_guid":"42650545-4394-4455-a5f5-9efad111fedc","weight":1},{"event_id":6461,"event_guid":"f42631ca-d3ec-5baf-8642-85c0b1cadc89","weight":2},{"event_id":6543,"event_guid":"48ed6dea-e67d-4866-8c35-318e9d892363","weight":1},{"event_id":6736,"event_guid":"c939e872-ac04-5729-a8e4-7c75af9d56be","weight":1},{"event_id":7023,"event_guid":"3e41cdac-2d82-5899-aa49-dc04861da0e2","weight":1},{"event_id":7268,"event_guid":"7007a0ab-a90c-4c5a-8ff2-e9faa6eba646","weight":1},{"event_id":7322,"event_guid":"37eebf57-a64d-4cc8-8ee1-226810ac834a","weight":1},{"event_id":7363,"event_guid":"24b58c74-2bba-412e-84ac-c206f714f0b7","weight":1},{"event_id":7450,"event_guid":"cd241757-8364-4eb1-8173-f049b54efca7","weight":1},{"event_id":7782,"event_guid":"448feb01-9247-5f6f-8be4-e61a78249549","weight":1},{"event_id":7786,"event_guid":"ff1553b4-c5d3-58c8-af63-d3b8064b5754","weight":1},{"event_id":8126,"event_guid":"b70ae8ac-c935-5d77-acd9-41737f53552b","weight":1},{"event_id":8161,"event_guid":"a7641e0b-b19f-5fe1-8ced-7bbcd035048e","weight":1},{"event_id":8184,"event_guid":"e9f17840-2080-4a96-94ad-676babe7ea3c","weight":1},{"event_id":8185,"event_guid":"a92717f6-8858-4162-9e72-9aedd4b830cb","weight":1},{"event_id":8199,"event_guid":"e558b4c7-be1c-4096-98f4-79e1237314fe","weight":1},{"event_id":8204,"event_guid":"98550357-b645-5683-9e6b-af20295d8fb1","weight":2},{"event_id":8205,"event_guid":"be0461ef-ad9f-51cb-be5a-f6dd3adf091e","weight":3},{"event_id":8207,"event_guid":"ea041ba6-e43b-52ea-9310-f36a7872abf5","weight":1},{"event_id":8208,"event_guid":"b1e00343-506c-51c4-92f5-6483562760d0","weight":2},{"event_id":8210,"event_guid":"a5cd48d1-6d8c-5be9-a17b-f229db0e3689","weight":1},{"event_id":8212,"event_guid":"1e5859eb-8231-57c1-a0b4-083215923cd4","weight":2},{"event_id":8214,"event_guid":"eb03cae4-9fb8-5ac6-b3b6-132cd07a7db0","weight":2},{"event_id":8222,"event_guid":"465d4b06-089c-571d-af98-5d3c87cf53a3","weight":2},{"event_id":8223,"event_guid":"96770b24-6aa8-53b1-9766-cc72e2e179c1","weight":2},{"event_id":8224,"event_guid":"21ff694c-e8f9-5aed-94bc-0efa78f93132","weight":3},{"event_id":8225,"event_guid":"1535b9d7-2182-53bb-b00d-4697c83bb5fc","weight":2},{"event_id":8226,"event_guid":"175f6e41-1cf4-5733-b656-5c990453fe2c","weight":2},{"event_id":8227,"event_guid":"8cde9720-65a3-5463-b9e8-aa8bfb6416b4","weight":5},{"event_id":8228,"event_guid":"0f38a37f-f2fe-5a70-9640-2614c3c9e050","weight":4},{"event_id":8230,"event_guid":"fcf859a5-a914-5ac2-98c6-66af0328bd6f","weight":2},{"event_id":8231,"event_guid":"fef79e66-cab6-5fc4-b31e-dc802c46f277","weight":2}]},{"guid":"1535b9d7-2182-53bb-b00d-4697c83bb5fc","title":"Seenotrettung und humanitäre Hilfe - was war, was ist, was wird? Kriminalisierung und der Ausblick auf 2019","subtitle":null,"slug":"35c3oio-66-seenotrettung-und-humanitre-hilfe-was-war-was-ist-was-wird-kriminalisierung-und-der-ausblick-auf-2019","link":"https://pretalx.35c3oio.freifunk.space/35c3oio/talk/WCXEXU/","description":"Die andauernde Kriminalisierung humanitärer Hilfe hat auch in diesem Jahr unsere Arbeit massiv erschwert, Menschenleben gekostet und die europäische Abschottungspolitik vorangetrieben. In diesem Talk geben wir einen Überblick darüber, welche Auswirkungen die Kriminalisierung humanitärer Hilfe haben kann und was im kommenden Jahr zu erwarten ist.","original_language":"deu","persons":["just humans"],"tags":["35c3-oio","66","2018"],"view_count":351,"promoted":false,"date":"2018-12-29T16:00:00.000+01:00","release_date":"2019-12-01T01:00:00.000+01:00","updated_at":"2026-01-24T13:30:12.343+01:00","length":3172,"duration":3172,"thumb_url":"https://static.media.ccc.de/media/congress/35C3-oio/66-hd.jpg","poster_url":"https://static.media.ccc.de/media/congress/35C3-oio/66-hd_preview.jpg","timeline_url":"https://static.media.ccc.de/media/congress/35C3-oio/66-hd.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/congress/35C3-oio/66-hd.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/35c3oio-66-seenotrettung-und-humanitre-hilfe-was-war-was-ist-was-wird-kriminalisierung-und-der-ausblick-auf-2019","url":"https://api.media.ccc.de/public/events/1535b9d7-2182-53bb-b00d-4697c83bb5fc","conference_title":"35C3: Open Infrastructure Orbit","conference_url":"https://api.media.ccc.de/public/conferences/35C3-oio","related":[{"event_id":5987,"event_guid":"2fdcdadb-0575-5a47-a59f-8376db33f0a6","weight":2},{"event_id":8208,"event_guid":"b1e00343-506c-51c4-92f5-6483562760d0","weight":3},{"event_id":8216,"event_guid":"d69cd444-9df3-5e9b-a79f-b70b7b3ec98d","weight":3},{"event_id":8223,"event_guid":"96770b24-6aa8-53b1-9766-cc72e2e179c1","weight":3},{"event_id":8227,"event_guid":"8cde9720-65a3-5463-b9e8-aa8bfb6416b4","weight":3},{"event_id":8231,"event_guid":"fef79e66-cab6-5fc4-b31e-dc802c46f277","weight":1}]},{"guid":"ee10b98c-7538-5354-b486-66e363cbb44f","title":"Fight for the bytes! Fun with Four Megabytes Flash","subtitle":null,"slug":"35c3oio-73-fight-for-the-bytes-fun-with-four-megabytes-flash","link":"https://pretalx.35c3oio.freifunk.space/35c3oio/talk/W9RHXR/","description":"The majority of Freifunk mesh routers only have 4mb flash and 32mb memory. The talk wants to start a discussion about possibilities and limits for future support of these devices.\n\nLot's of mesh communities and even OpenWrt want to drop support for 4mb flash / 32mb memory devices. Where is the size and memory increase coming from? Can we do it in a different way or do we have to accept defeat? \n\n- Forcing OpenWrt to diet: What knobs can we tweak? What gains and tradeoffs can we expect?  \n- A short introduction to ubus over HTTP\n- Stupid ideas and experiments.","original_language":"eng","persons":["mt"],"tags":["35c3-oio","73","2018"],"view_count":243,"promoted":false,"date":"2018-12-28T21:00:00.000+01:00","release_date":"2019-12-01T01:00:00.000+01:00","updated_at":"2026-01-30T10:30:10.160+01:00","length":1342,"duration":1342,"thumb_url":"https://static.media.ccc.de/media/congress/35C3-oio/73-hd.jpg","poster_url":"https://static.media.ccc.de/media/congress/35C3-oio/73-hd_preview.jpg","timeline_url":"https://static.media.ccc.de/media/congress/35C3-oio/73-hd.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/congress/35C3-oio/73-hd.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/35c3oio-73-fight-for-the-bytes-fun-with-four-megabytes-flash","url":"https://api.media.ccc.de/public/events/ee10b98c-7538-5354-b486-66e363cbb44f","conference_title":"35C3: Open Infrastructure Orbit","conference_url":"https://api.media.ccc.de/public/conferences/35C3-oio","related":[{"event_id":2797,"event_guid":"d934d3e2-9de8-11e5-8a67-5b7bcd9fe77d","weight":1},{"event_id":7836,"event_guid":"6a019d59-f68f-5d62-aa28-e95d5fb6e541","weight":1},{"event_id":8203,"event_guid":"93e378a5-3b6b-4a8d-890c-fe3b890428c8","weight":1},{"event_id":8223,"event_guid":"96770b24-6aa8-53b1-9766-cc72e2e179c1","weight":2},{"event_id":8224,"event_guid":"21ff694c-e8f9-5aed-94bc-0efa78f93132","weight":1},{"event_id":8227,"event_guid":"8cde9720-65a3-5463-b9e8-aa8bfb6416b4","weight":1},{"event_id":8228,"event_guid":"0f38a37f-f2fe-5a70-9640-2614c3c9e050","weight":1},{"event_id":8231,"event_guid":"fef79e66-cab6-5fc4-b31e-dc802c46f277","weight":2}]},{"guid":"0519cc1f-4c12-53f0-a83d-5958edcfc148","title":"Get your data back under control - 200 things you can do with Nextcloud","subtitle":null,"slug":"35c3oio-67-get-your-data-back-under-control-200-things-you-can-do-with-nextcloud","link":"https://pretalx.35c3oio.freifunk.space/35c3oio/talk/KB9VRZ/","description":"We live in a world of data theft and broken clouds and I believe it is time to decentralize, host at home or a local provider we trust. Nextcloud is an option that can take care of many of your file sync'n'share, chat and document editing needs, and I'll show how and why!\n\nThe data from many people is floating around on 'clouds', regularly stolen and traded. We need to decentralize, host ourselves or at a large number of small, local providers we can trust! Probably the most used solution for that today is Nextcloud, which through its app ecosystem of almost 200 apps can be extended to do lots of things.\n\nWith Nextcloud you can sync and share files, access your calendars and contacts, share holiday pictures with your family or play music. But also manage your passwords, track your phone through GPS, draw, read news, chat and have audio/video calls, read mail, manage tasks and much more.\n\nThe community has developed almost 200 apps that do all that and more, and loads of tutorials on how to install Nextcloud on a Nuc, in a VM, on a raspberry Pi and more. If self-hosting isn't realistic for you, we have Simple Signup which sets you up at a Nextcloud hosting provider close to you in a few clicks.\n\nThis talk is for people not yet familiar with Nextcloud!","original_language":"eng","persons":["Jos Poortvliet"],"tags":["35c3-oio","67","2018"],"view_count":969,"promoted":false,"date":"2018-12-28T18:30:00.000+01:00","release_date":"2019-11-30T01:00:00.000+01:00","updated_at":"2026-04-04T19:15:04.229+02:00","length":3161,"duration":3161,"thumb_url":"https://static.media.ccc.de/media/congress/35C3-oio/67-hd.jpg","poster_url":"https://static.media.ccc.de/media/congress/35C3-oio/67-hd_preview.jpg","timeline_url":"https://static.media.ccc.de/media/congress/35C3-oio/67-hd.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/congress/35C3-oio/67-hd.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/35c3oio-67-get-your-data-back-under-control-200-things-you-can-do-with-nextcloud","url":"https://api.media.ccc.de/public/events/0519cc1f-4c12-53f0-a83d-5958edcfc148","conference_title":"35C3: Open Infrastructure Orbit","conference_url":"https://api.media.ccc.de/public/conferences/35C3-oio","related":[{"event_id":5965,"event_guid":"c9dcd2a5-288f-55d0-8577-dc00c2e185ce","weight":1},{"event_id":6543,"event_guid":"48ed6dea-e67d-4866-8c35-318e9d892363","weight":1},{"event_id":8166,"event_guid":"1db9ce1c-e9bb-547f-9481-8add961acbdb","weight":1},{"event_id":8199,"event_guid":"e558b4c7-be1c-4096-98f4-79e1237314fe","weight":1},{"event_id":8220,"event_guid":"d3e546e5-f917-51ab-ab5e-a88c89699fcc","weight":1},{"event_id":8222,"event_guid":"465d4b06-089c-571d-af98-5d3c87cf53a3","weight":1},{"event_id":8223,"event_guid":"96770b24-6aa8-53b1-9766-cc72e2e179c1","weight":2},{"event_id":8227,"event_guid":"8cde9720-65a3-5463-b9e8-aa8bfb6416b4","weight":3}]},{"guid":"d3e546e5-f917-51ab-ab5e-a88c89699fcc","title":"Independent Solar Energy Mesh System","subtitle":null,"slug":"35c3oio-63-independent-solar-energy-mesh-system","link":"https://pretalx.35c3oio.freifunk.space/35c3oio/talk/EGJW3F/","description":"Das Independent Solar Energy Mesh System (ISEMS) knüpft an den Freifunk-OpenMPP-Tracker an. Das System (Lua-Tool, Integration in Luci, Mikrocontroller-Firmware für den OpenMPPT, Web-App) soll es für Nicht-Experten einfacher machen, ihrer eigene drahtlosen Freifunk-Kommunikationsinfrastruktur unabhängig vom Stromnetz zu betreiben.\n\nISEMS überwacht u.a. den Batteriestand, die Batterietemperatur und die Energiedaten des Moduls und bietet Strategien zum Energiesparen.\n\nMit der ISEMS-Software können Benutzer eine Übersicht einsehen, wie ihre Solarknoten arbeiten. Die Web-App zeigt eine Übersicht aller Knoten sowie eine Checkliste für die einzelnen Knoten. Wenn etwas aus dem Ruder läuft, liefert sie Warnungen und Hinweise zur Fehlerbehebung.\n\nDauer: 20 Minuten für unsere Präsentation mit 10 Minuten für Q + A\n\nZusätzliche Infos / Links / Referenzen:\n\nhttp://isems.de\nhttps://www.youtube.com/watch?v=BxFpY2tsPtU\nhttps://wiki.freifunk.net/Freifunk-MPP-Tracker","original_language":"deu","persons":["Elektra"],"tags":["35c3-oio","63","2018"],"view_count":334,"promoted":false,"date":"2018-12-29T13:30:00.000+01:00","release_date":"2019-12-01T01:00:00.000+01:00","updated_at":"2025-11-23T06:45:02.713+01:00","length":1636,"duration":1636,"thumb_url":"https://static.media.ccc.de/media/congress/35C3-oio/63-hd.jpg","poster_url":"https://static.media.ccc.de/media/congress/35C3-oio/63-hd_preview.jpg","timeline_url":"https://static.media.ccc.de/media/congress/35C3-oio/63-hd.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/congress/35C3-oio/63-hd.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/35c3oio-63-independent-solar-energy-mesh-system","url":"https://api.media.ccc.de/public/events/d3e546e5-f917-51ab-ab5e-a88c89699fcc","conference_title":"35C3: Open Infrastructure Orbit","conference_url":"https://api.media.ccc.de/public/conferences/35C3-oio","related":[{"event_id":2473,"event_guid":"f83350dc-8152-422c-921f-379b018c0fa2","weight":1},{"event_id":2498,"event_guid":"cdc39fc3-715d-4610-b633-3821e4762aa4","weight":1},{"event_id":2551,"event_guid":"f8909f2d-fac5-4d5f-b483-cff184591b0c","weight":1},{"event_id":4765,"event_guid":"9326038b-f781-4707-b35a-9ef52f98d35a","weight":1},{"event_id":4790,"event_guid":"edd02e52-28f8-4f3e-8b17-75cffecb6d7f","weight":1},{"event_id":4903,"event_guid":"f68f2747-1c57-4531-a574-3ebe77d80135","weight":1},{"event_id":4935,"event_guid":"947f946e-3dd9-4911-b4de-f9bbd87058ee","weight":1},{"event_id":5638,"event_guid":"bc119064-0b23-443b-82d4-55719d478151","weight":1},{"event_id":6259,"event_guid":"e3af76dc-048c-4c1d-b545-4bf3de29f890","weight":1},{"event_id":6307,"event_guid":"68c4a471-12ae-4b1a-b4e6-a54528f5377a","weight":2},{"event_id":6423,"event_guid":"ea7c532f-cc2d-4cb1-8f15-1933df7fd523","weight":1},{"event_id":6469,"event_guid":"2cc78749-a8c0-5c48-83ac-ec0c40c1b41d","weight":1},{"event_id":6891,"event_guid":"ea3c3c80-fb80-5e16-b382-561318459032","weight":1},{"event_id":7245,"event_guid":"f681a9f2-7d22-5e8a-be3c-8d4faaf15062","weight":1},{"event_id":7248,"event_guid":"0430ce77-480e-5621-898b-e00f453fbabf","weight":1},{"event_id":7782,"event_guid":"448feb01-9247-5f6f-8be4-e61a78249549","weight":1},{"event_id":7785,"event_guid":"d029ea6e-7755-5c91-bb0b-764e51e7a34a","weight":1},{"event_id":8211,"event_guid":"6d0ea2d9-aa91-5bba-84af-21dd73038d81","weight":1},{"event_id":8215,"event_guid":"0519cc1f-4c12-53f0-a83d-5958edcfc148","weight":1},{"event_id":8219,"event_guid":"b4fdd0df-1969-5b9e-9bf1-277eb1411d6b","weight":1},{"event_id":8222,"event_guid":"465d4b06-089c-571d-af98-5d3c87cf53a3","weight":1},{"event_id":8227,"event_guid":"8cde9720-65a3-5463-b9e8-aa8bfb6416b4","weight":1}]},{"guid":"6d0ea2d9-aa91-5bba-84af-21dd73038d81","title":"Careables: Open Source Hardware in Health+Care [Introduction]","subtitle":null,"slug":"35c3oio-110-careables-open-source-hardware-in-health-care-introduction-","link":"https://pretalx.35c3oio.freifunk.space/35c3oio/talk/SWS3WR/","description":"Careables\n\nCalling all hackers, designers, makers, carers, and healthcare professionals!\n\nWhat are challenges you face every day using standard tools for health and wellbeing? Do you have an idea that makes everyday life easier? How could you use your existing hackerspace to foster exchange and collaboration in health and care?\n\nThrough Careables, maker and designer collaborate with patients and healthcare professionals to create personalized solutions and open source knowledge that will improve the lives of many patients and professionals.\n\nAccessible, comprehensive and easy to use open source hardware are being documented, collected and shared through the platform Careables.org. This platform is currently being launched and will function as repository for well documented open hardware projects. It offers many different communities a place to connect and exchange knowledge, needs and co-create solutions.\n\nIt's easy to think of open hardware that make a difference in people's lives. An example of this is OPEN LIGHTS. This project offers people with wheelchairs an adjustable wheelchair specific light that makes them better visible at night and that can be built with most common DIY technologies.","original_language":"eng","persons":["Sandra GIG"],"tags":["35c3-oio","110","2018"],"view_count":100,"promoted":false,"date":"2018-12-28T13:30:00.000+01:00","release_date":"2019-11-30T01:00:00.000+01:00","updated_at":"2026-01-01T23:45:21.580+01:00","length":945,"duration":945,"thumb_url":"https://static.media.ccc.de/media/congress/35C3-oio/110-hd.jpg","poster_url":"https://static.media.ccc.de/media/congress/35C3-oio/110-hd_preview.jpg","timeline_url":"https://static.media.ccc.de/media/congress/35C3-oio/110-hd.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/congress/35C3-oio/110-hd.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/35c3oio-110-careables-open-source-hardware-in-health-care-introduction-","url":"https://api.media.ccc.de/public/events/6d0ea2d9-aa91-5bba-84af-21dd73038d81","conference_title":"35C3: Open Infrastructure Orbit","conference_url":"https://api.media.ccc.de/public/conferences/35C3-oio","related":[{"event_id":2551,"event_guid":"f8909f2d-fac5-4d5f-b483-cff184591b0c","weight":1},{"event_id":6307,"event_guid":"68c4a471-12ae-4b1a-b4e6-a54528f5377a","weight":1},{"event_id":6474,"event_guid":"f58a2b6d-bde0-483b-a8db-043ea9371cb6","weight":1},{"event_id":6507,"event_guid":"787007cf-828d-4409-94b0-90a0b8d727a0","weight":1},{"event_id":6611,"event_guid":"b1b28bd0-5279-4950-8385-9ee8a57187f9","weight":1},{"event_id":7847,"event_guid":"bf3e6d3e-17cd-51a6-a065-d6a2fdb35234","weight":1},{"event_id":8220,"event_guid":"d3e546e5-f917-51ab-ab5e-a88c89699fcc","weight":1}]},{"guid":"1e5859eb-8231-57c1-a0b4-083215923cd4","title":"Empowering rural Africa using the freifunk model","subtitle":null,"slug":"35c3oio-92-empowering-rural-africa-using-the-freifunk-model","link":"https://pretalx.35c3oio.freifunk.space/35c3oio/talk/7BRU3D/","description":"envisioning a thriving, connected future amidst conflict-struck Nigeria. Creating opportunities for rural women and youth, in a scalable, inclusive way.\n\n###About the presenter\nPaul Henckel from TribeGroup (DK-based) will share his thoughts and plans for an ongoing resilience project with Fantsuam (NG-based) in creating ICT coworking spaces for rural women and youths in Nigeria, using the knowledge from Freifunk communities. \n\n###About TribeGroup\nTribeGroup is a Danish impact investment startup with mission to support or invest in other companies, projects or initiatives that have a potentially high social or environmental impact. It currently directs WorkHive, a flexible, affordable, inclusive and carbon negative coworking space in Copenhagen. The collaboration with Nigerian-based Fantsuam tries to integrate best practices of Freifunk, Fantsuam and WorkHive to create a new coworking space in Kafanchan, Nigeria.\n\n###About Fantsuam\nOur Mission at Fantsuam Foundation (www.fantsuam.org) is to eliminate poverty and disadvantage among rural women and youths in Nigeria through integrated development programs. At our ICT Academy,In 22 years, we have empowered 12,000, and we aim to educate women and youths with relevant digital literacy skills to manage their development priorities, providing opportunities for girls to become developers and deploy ICT solutions for their livelihoods. Our services have become even more imperative as our communities come out of decade long cycles of sectarian violence. We plan to reach 25,000 more by 2020.\n\nCommunity Network, is a resilient communication platform in which the community owns, manages and maintains its own communication infrastructure provides the opportunities for rural youths to gain the necessary hands-on experience. Fantsuam Foundation hosts the Google Developers Group in Kafanchan, this is another resource that is being deployed to provide ICT skills and knowledge opportunities for our youths.\n\nWe are now  engaged in high level policy advocacy for affordable and available internet access for the unconnected in rural Nigeria. Obtaining the TVWS concession for the unconnected in Nigeria will begin to make for an inclusive national telecommunication effort. It is within that context that Fantsuam continues to support the increasing number of youths, particularly females, who now recognise the career opportunities available in ICT. Our ICT Academy provides basic digital literacy training and has expanded to provision of training in computer and network maintenance. In order to optimise the use of resources and make our services more accessible, we have located an office space in the Kafanchan Railway town where we would like to set up an ICT Co-Working space where budding entrepreneurs can have ready access to training and mentoring facilities, office space with assured power and internet access at affordable prices.\n\nOur efforts at tackling poverty through an integrated approach has meant that we also provide social services in public health, menstrual health hygiene, sanitation marketing, peace building, entrepreneurship training supported by microfinance. We currently have 32 full time staff and a large pool of volunteers who are invited to join specific projects and programs, which are usually of short duration. Our work in peace building led us to build six new apartments for victims of recent sectarian crisis, and we continue to explore opportunities to enable our communities to resume their normal lives. Our model of farming cooperatives, called the TIME-AID, empowers individuals and families to engage in commercial farming with the goal of household food security, family health insurance, adequate housing and education for all our children.\n\nFantsuam Foundation’s integrated approach to develop has enabled it to have an inbuilt resilience to cope with the challenges of rural development, global economic challenges whose effects are usually more devastating at the base of the pyramid, while we continue to develop initiatives that helps the people to assert their humanity and freedom from poverty.","original_language":"eng","persons":["Paul Henckel"],"tags":["35c3-oio","92","2018"],"view_count":76,"promoted":false,"date":"2018-12-28T13:00:00.000+01:00","release_date":"2019-11-30T01:00:00.000+01:00","updated_at":"2025-11-23T06:45:02.796+01:00","length":1491,"duration":1491,"thumb_url":"https://static.media.ccc.de/media/congress/35C3-oio/92-hd.jpg","poster_url":"https://static.media.ccc.de/media/congress/35C3-oio/92-hd_preview.jpg","timeline_url":"https://static.media.ccc.de/media/congress/35C3-oio/92-hd.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/congress/35C3-oio/92-hd.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/35c3oio-92-empowering-rural-africa-using-the-freifunk-model","url":"https://api.media.ccc.de/public/events/1e5859eb-8231-57c1-a0b4-083215923cd4","conference_title":"35C3: Open Infrastructure Orbit","conference_url":"https://api.media.ccc.de/public/conferences/35C3-oio","related":[{"event_id":8204,"event_guid":"98550357-b645-5683-9e6b-af20295d8fb1","weight":1},{"event_id":8206,"event_guid":"760fa3e5-8307-5d44-9248-bc28b510bbe0","weight":1},{"event_id":8214,"event_guid":"eb03cae4-9fb8-5ac6-b3b6-132cd07a7db0","weight":1},{"event_id":8219,"event_guid":"b4fdd0df-1969-5b9e-9bf1-277eb1411d6b","weight":1},{"event_id":8221,"event_guid":"75a12486-070c-539d-b4a9-a9495c86b78d","weight":2},{"event_id":8230,"event_guid":"fcf859a5-a914-5ac2-98c6-66af0328bd6f","weight":1}]},{"guid":"a5cd48d1-6d8c-5be9-a17b-f229db0e3689","title":"Open Prototype Fund","subtitle":null,"slug":"35c3oio-78-open-prototype-fund","link":"https://pretalx.35c3oio.freifunk.space/35c3oio/talk/V8RTSW/","description":"The Prototype Fund is a funding program for Public Interest Techfirst of its kind in Germany and supports independent software developers, hackers and creative people in implementing their open source ideas from concept to first demo. Since 2016, we (Adriana, Elisa, Fiona, Julia and Katharina) have been working to break down existing structures and narratives in the field of innovation funding and to encourage meaningful digital solutions for society in Software Infrastructure, IT-Security, Data Literacy and Civic Tech. We want to get to know you and your ideas and talk about how we, together with politicians, developers and other initiators from the (active) civil society, can best support, develop and make visible good digital-social innovation practices from the perspective of the community. Which decisions are necessary in the future, what are meaningful political demands? And which are the next big things in Tech? 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Der größte Schritt aus Benutzersicht war, die langen DECT Registrierungsschlangen gegen eine Selbst- oder Auto-Registrierungsfunktion zu tauschen. 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In this talk we'd like to give an introduction about Void, why we think our work matters and talk about the challenges that we were faced during the last year.","original_language":"eng","persons":["Enno Boland"],"tags":["35c3-oio","44","2018"],"view_count":177,"promoted":false,"date":"2018-12-27T19:00:00.000+01:00","release_date":"2019-11-30T01:00:00.000+01:00","updated_at":"2025-12-24T02:00:04.223+01:00","length":1654,"duration":1654,"thumb_url":"https://static.media.ccc.de/media/congress/35C3-oio/44-hd.jpg","poster_url":"https://static.media.ccc.de/media/congress/35C3-oio/44-hd_preview.jpg","timeline_url":"https://static.media.ccc.de/media/congress/35C3-oio/44-hd.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/congress/35C3-oio/44-hd.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/35c3oio-44-state-of-the-void","url":"https://api.media.ccc.de/public/events/760fa3e5-8307-5d44-9248-bc28b510bbe0","conference_title":"35C3: Open Infrastructure Orbit","conference_url":"https://api.media.ccc.de/public/conferences/35C3-oio","related":[{"event_id":6441,"event_guid":"5e68df49-aed6-535b-b7e3-094f66b11c12","weight":1},{"event_id":6483,"event_guid":"b873392d-f0e7-50ee-a918-770f104efeae","weight":1},{"event_id":6486,"event_guid":"7ebee226-66bc-558f-b76f-435a8ce91543","weight":1},{"event_id":7066,"event_guid":"B7CBSq7u1UrdIoJSOaMcUQ","weight":1},{"event_id":7232,"event_guid":"526bc948-ab22-47e4-85df-36077b1b9d62","weight":1},{"event_id":8187,"event_guid":"456fb60c-5ce7-11e8-be47-1fb2912eb8104","weight":1},{"event_id":8204,"event_guid":"98550357-b645-5683-9e6b-af20295d8fb1","weight":1},{"event_id":8205,"event_guid":"be0461ef-ad9f-51cb-be5a-f6dd3adf091e","weight":1},{"event_id":8207,"event_guid":"ea041ba6-e43b-52ea-9310-f36a7872abf5","weight":1},{"event_id":8210,"event_guid":"a5cd48d1-6d8c-5be9-a17b-f229db0e3689","weight":1},{"event_id":8212,"event_guid":"1e5859eb-8231-57c1-a0b4-083215923cd4","weight":1},{"event_id":8219,"event_guid":"b4fdd0df-1969-5b9e-9bf1-277eb1411d6b","weight":1},{"event_id":8221,"event_guid":"75a12486-070c-539d-b4a9-a9495c86b78d","weight":1},{"event_id":8224,"event_guid":"21ff694c-e8f9-5aed-94bc-0efa78f93132","weight":1},{"event_id":8226,"event_guid":"175f6e41-1cf4-5733-b656-5c990453fe2c","weight":2},{"event_id":8230,"event_guid":"fcf859a5-a914-5ac2-98c6-66af0328bd6f","weight":1},{"event_id":8231,"event_guid":"fef79e66-cab6-5fc4-b31e-dc802c46f277","weight":1}]},{"guid":"d69cd444-9df3-5e9b-a79f-b70b7b3ec98d","title":"Wem ist noch zu helfen","subtitle":null,"slug":"35c3oio-96-wem-ist-noch-zu-helfen","link":"https://pretalx.35c3oio.freifunk.space/35c3oio/talk/BBGXPY/","description":"Global NGO Players vs. (linke) Grassroots-Gruppen - wer entscheidet, wem wann wie geholfen wird...und wo verkommt humanitäre Praxis zum politischen Spielfeld\n\nAus Kritik am humanitären System der UN und seinen beteiligten Groß-NGOs haben sich viele (linke) Grassroots-Gruppen gegründet. Auch diese können natürlich nicht ohne finanzielle Mittel arbeiten, und sind somit auf Spenden, ergo auf Öffentlichkeitsarbeit angewiesen. \nWie entscheiden die \"Großen\" wann und wie und wem geholfen wird? Welche Lücken bleiben dabei (zwangsläufig)?\nUnd wie werden diese Entscheidungen bei den Grassroots getroffen? Und welche Auswirkungen auf die Wahrnehmung von Krisen hat ihre Öffentlichkeitsarbeit? \"Trommeln gehört  zum Handwerk\", aber wo läuft linkes humanitäres Engagement Gefahr, in rein politisch motivierten Aktivismus abzudriften? Und wenn das schlimm ist, warum? \nEine kritische Betrachtungsweise.","original_language":"deu","persons":["Sebastian"],"tags":["35c3-oio","96","2018"],"view_count":234,"promoted":false,"date":"2018-12-28T17:00:00.000+01:00","release_date":"2019-12-01T01:00:00.000+01:00","updated_at":"2024-11-22T21:30:04.038+01:00","length":4515,"duration":4515,"thumb_url":"https://static.media.ccc.de/media/congress/35C3-oio/96-hd.jpg","poster_url":"https://static.media.ccc.de/media/congress/35C3-oio/96-hd_preview.jpg","timeline_url":"https://static.media.ccc.de/media/congress/35C3-oio/96-hd.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/congress/35C3-oio/96-hd.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/35c3oio-96-wem-ist-noch-zu-helfen","url":"https://api.media.ccc.de/public/events/d69cd444-9df3-5e9b-a79f-b70b7b3ec98d","conference_title":"35C3: Open Infrastructure Orbit","conference_url":"https://api.media.ccc.de/public/conferences/35C3-oio","related":[{"event_id":1728,"event_guid":"3poSeUcpc6woNaI5dhATcQ","weight":1},{"event_id":2291,"event_guid":"2f68e356-6c3f-4034-9640-c06d717ed96b","weight":1},{"event_id":2923,"event_guid":"ba780105-8cc1-4e6e-8552-5e3bc150b9ff","weight":1},{"event_id":4706,"event_guid":"cc614df4-ff39-4475-99d5-6597e5fadc75","weight":1},{"event_id":6735,"event_guid":"b7640bd5-2810-53ee-8b8e-b5f8472add1f","weight":1},{"event_id":6748,"event_guid":"b3fe7f83-cdd3-436a-91db-56c13b2aeb3a","weight":1},{"event_id":7236,"event_guid":"e3bdda0e-c95f-4021-8500-3718a2913352","weight":1},{"event_id":8020,"event_guid":"be4a8db4-e60b-11e9-895b-3ca9f456171c","weight":1},{"event_id":8185,"event_guid":"a92717f6-8858-4162-9e72-9aedd4b830cb","weight":1},{"event_id":8201,"event_guid":"3712beb2-12f2-552a-b831-b0cd5e4527ab","weight":1},{"event_id":8208,"event_guid":"b1e00343-506c-51c4-92f5-6483562760d0","weight":3},{"event_id":8210,"event_guid":"a5cd48d1-6d8c-5be9-a17b-f229db0e3689","weight":1},{"event_id":8219,"event_guid":"b4fdd0df-1969-5b9e-9bf1-277eb1411d6b","weight":1},{"event_id":8222,"event_guid":"465d4b06-089c-571d-af98-5d3c87cf53a3","weight":4},{"event_id":8225,"event_guid":"1535b9d7-2182-53bb-b00d-4697c83bb5fc","weight":3},{"event_id":8226,"event_guid":"175f6e41-1cf4-5733-b656-5c990453fe2c","weight":2},{"event_id":8231,"event_guid":"fef79e66-cab6-5fc4-b31e-dc802c46f277","weight":3}]},{"guid":"2ff22102-25a3-5bd9-8e77-ef169442f6a8","title":"GSoC 2018 - project presentations","subtitle":null,"slug":"35c3oio-31-gsoc-2018-project-presentations","link":"https://pretalx.35c3oio.freifunk.space/35c3oio/talk/WUBRSK/","description":"Some students will present results of their projects\n\n* zoobab shows \"MultipathTCP and Openwrt improvements with eBPF\"\n* mwarning talks about the \"Meshenger App\"","original_language":"eng","persons":["Andreas Bräu"],"tags":["35c3-oio","31","2018"],"view_count":63,"promoted":false,"date":"2018-12-28T14:00:00.000+01:00","release_date":"2019-11-30T01:00:00.000+01:00","updated_at":"2025-07-24T20:15:05.385+02:00","length":1673,"duration":1673,"thumb_url":"https://static.media.ccc.de/media/congress/35C3-oio/31-hd.jpg","poster_url":"https://static.media.ccc.de/media/congress/35C3-oio/31-hd_preview.jpg","timeline_url":"https://static.media.ccc.de/media/congress/35C3-oio/31-hd.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/congress/35C3-oio/31-hd.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/35c3oio-31-gsoc-2018-project-presentations","url":"https://api.media.ccc.de/public/events/2ff22102-25a3-5bd9-8e77-ef169442f6a8","conference_title":"35C3: Open Infrastructure Orbit","conference_url":"https://api.media.ccc.de/public/conferences/35C3-oio","related":[{"event_id":6414,"event_guid":"f010dc03-13bc-413d-95ec-e8786626a2f1","weight":1},{"event_id":8035,"event_guid":"e6057ab0-ab12-ee44-8cd6-973c1a183978","weight":1},{"event_id":8208,"event_guid":"b1e00343-506c-51c4-92f5-6483562760d0","weight":1},{"event_id":8222,"event_guid":"465d4b06-089c-571d-af98-5d3c87cf53a3","weight":1}]},{"guid":"b0e5ac97-960a-516c-a1ac-5cda9129b0f4","title":"Menschenrechte, Bildung, open infrastructure","subtitle":null,"slug":"35c3oio-14-menschenrechte-bildung-open-infrastructure","link":"https://pretalx.35c3oio.freifunk.space/35c3oio/talk/ELUSFV/","description":"Die 3 Begriffe werden beleutet und Zusammenhänge hergestellt\n\nHeute hat sich eindeutig das Internet durchgesetzt und es stellt sich die Frage, wie gehen wir damit um. Die AkteurInnen im Internet sind Menschen oder von Menschen gemachte Programme. Als Grundlage im Internet sollten die nun schon 70 Jahre alten Menschenrechte gelten. Auch im Bildungsbereich verändert das Internet die bisherigen Strukturen unseres Bildungssystems, mMn sogar weltweit. Menschen begegnen sich auf Augenhöhe. Die open infrastructure hilft dabei Bildung für Menschen zugänglich zu machen und Menschen ein selbstbestimmtes Leben führen zulassen. Die \"Hierachien im Kopf\" werden von dem realistischen Denken \"wir sind alle gerade jetzt auf der Oberfläche von Planet Erde auf Augenhöhe\" abgelöst. Dies ist der Prozess, den wir gerade in vielen Bereichen unserer Gesellschaft beobachten.","original_language":"deu","persons":["Peter Babnik (Petergoge)"],"tags":["35c3-oio","14","2018"],"view_count":63,"promoted":false,"date":"2018-12-28T19:30:00.000+01:00","release_date":"2019-12-01T01:00:00.000+01:00","updated_at":"2026-01-10T00:30:16.449+01:00","length":1434,"duration":1434,"thumb_url":"https://static.media.ccc.de/media/congress/35C3-oio/14-hd.jpg","poster_url":"https://static.media.ccc.de/media/congress/35C3-oio/14-hd_preview.jpg","timeline_url":"https://static.media.ccc.de/media/congress/35C3-oio/14-hd.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/congress/35C3-oio/14-hd.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/35c3oio-14-menschenrechte-bildung-open-infrastructure","url":"https://api.media.ccc.de/public/events/b0e5ac97-960a-516c-a1ac-5cda9129b0f4","conference_title":"35C3: Open Infrastructure Orbit","conference_url":"https://api.media.ccc.de/public/conferences/35C3-oio","related":[]},{"guid":"eb03cae4-9fb8-5ac6-b3b6-132cd07a7db0","title":"Project Parker: Klassisches Routing für Freifunk","subtitle":null,"slug":"35c3oio-69-project-parker-klassisches-routing-fr-freifunk","link":"https://pretalx.35c3oio.freifunk.space/35c3oio/talk/V3XY87/","description":"Gluon mit BATMAN setzt klassisch auf ein großes Layer 2 Netz, was in den großen Freifunk Communities zu Problemen führt. Mit unseren Bemühungen in \"Project Parker\" versuchen wir diese Probleme durch den Einsatz von klassischem Routing zu umgehen. In unserem Talk stellen wir unsere Architektur vor und zeigen welchen Stand unsere Umsetzung erreicht hat.\n\nGluon mit BATMAN setzt klassisch auf ein großes Layer 2 Netz, was in den großen Freifunk Communities zu Problemen führt. Diese Communities begegnen den Problemen i.d.R. mit der Segmentierung des Netzes in Domains. Innerhalb dieser Domains wird allerdings das klassische Netz (BATMAN) eingesetzt.\n\nMit \"Project Parker\" versuchen wir diese Probleme durch klassisches Routing in einem hierarchischem Netz zu lösen: Jeder Freifunk-Knoten mit Uplink ist Gateway für sein Netzsegment, macht DHCP und ist DNS-Cache. Das Routing mit BATMAN beschränkt sich nun auf kleine Mesh-Netze innerhalb des gesamten Netzes.\n\nWir stellen in unserem Talk unsere Architektur vor und zeigen welchen Stand unsere Umsetzung erreicht hat.","original_language":"deu","persons":["Chris Fiege und Jan Lübbe"],"tags":["35c3-oio","69","2018"],"view_count":199,"promoted":false,"date":"2018-12-28T16:00:00.000+01:00","release_date":"2019-11-30T01:00:00.000+01:00","updated_at":"2026-04-11T23:00:06.671+02:00","length":2744,"duration":2744,"thumb_url":"https://static.media.ccc.de/media/congress/35C3-oio/69-hd.jpg","poster_url":"https://static.media.ccc.de/media/congress/35C3-oio/69-hd_preview.jpg","timeline_url":"https://static.media.ccc.de/media/congress/35C3-oio/69-hd.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/congress/35C3-oio/69-hd.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/35c3oio-69-project-parker-klassisches-routing-fr-freifunk","url":"https://api.media.ccc.de/public/events/eb03cae4-9fb8-5ac6-b3b6-132cd07a7db0","conference_title":"35C3: Open Infrastructure Orbit","conference_url":"https://api.media.ccc.de/public/conferences/35C3-oio","related":[{"event_id":8204,"event_guid":"98550357-b645-5683-9e6b-af20295d8fb1","weight":1},{"event_id":8212,"event_guid":"1e5859eb-8231-57c1-a0b4-083215923cd4","weight":1},{"event_id":8215,"event_guid":"0519cc1f-4c12-53f0-a83d-5958edcfc148","weight":1},{"event_id":8221,"event_guid":"75a12486-070c-539d-b4a9-a9495c86b78d","weight":2},{"event_id":8223,"event_guid":"96770b24-6aa8-53b1-9766-cc72e2e179c1","weight":1},{"event_id":8225,"event_guid":"1535b9d7-2182-53bb-b00d-4697c83bb5fc","weight":1},{"event_id":8227,"event_guid":"8cde9720-65a3-5463-b9e8-aa8bfb6416b4","weight":1},{"event_id":8228,"event_guid":"0f38a37f-f2fe-5a70-9640-2614c3c9e050","weight":1}]},{"guid":"fef79e66-cab6-5fc4-b31e-dc802c46f277","title":"Schwarze Löcher für blutige Anfänger","subtitle":null,"slug":"35c3oio-114-schwarze-lcher-fr-blutige-anfnger","link":"https://pretalx.35c3oio.freifunk.space/35c3oio/talk/QAS33L/","description":"Albert Einstein hat sie vorhergesagt, bis in die 90er hinein war ihre Existenz heftig umstritten - die vielleicht verrücktesten Dinger im Universum: Schwarze Löcher.\n\nEigentlich dürften Schwarze Löcher nicht existieren. Wie kann etwas \"unendliche Dichte\" haben, \"unendlich klein\" sein. Und wenn nichts, aber auch gar nichts ein schwarzes Loch verlassen kann, wie kann dann die Gravitation das schwarze Loch verlassen? Und was passiert mit der Zeit in der Nähe schwarzer Löcher, bleibt die da wirklich stehen? Und woher wissen wir, dass sie wirklich existieren? In Schwarzen Löchern krachen zwei unvereinbare Theorien aufeinander, die Quantenphysik und die Relativitätstheorie.  \nWir beschäftigen uns mit jeder Menge Fragen an den Grenzen der Physik... und manchmal ein wenig darüber hinaus.\n\nVorkenntnisse sind nicht erforderlich.","original_language":"deu","persons":["Steini"],"tags":["35c3-oio","114","2018"],"view_count":4003,"promoted":false,"date":"2018-12-29T22:00:00.000+01:00","release_date":"2019-12-01T01:00:00.000+01:00","updated_at":"2026-04-14T02:30:04.109+02:00","length":6251,"duration":6251,"thumb_url":"https://static.media.ccc.de/media/congress/35C3-oio/114-hd.jpg","poster_url":"https://static.media.ccc.de/media/congress/35C3-oio/114-hd_preview.jpg","timeline_url":"https://static.media.ccc.de/media/congress/35C3-oio/114-hd.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/congress/35C3-oio/114-hd.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/35c3oio-114-schwarze-lcher-fr-blutige-anfnger","url":"https://api.media.ccc.de/public/events/fef79e66-cab6-5fc4-b31e-dc802c46f277","conference_title":"35C3: Open Infrastructure Orbit","conference_url":"https://api.media.ccc.de/public/conferences/35C3-oio","related":[{"event_id":2814,"event_guid":"3cb4101c-2042-4883-b6fb-6591994a70c0","weight":2},{"event_id":7820,"event_guid":"9a497fd7-62b4-5b5b-bf09-5dd123d18305","weight":2},{"event_id":8157,"event_guid":"a01ef29e-7295-5890-a10d-5f995ac734b9","weight":3},{"event_id":8187,"event_guid":"456fb60c-5ce7-11e8-be47-1fb2912eb8104","weight":2},{"event_id":8198,"event_guid":"971f9492-421a-468b-8d56-f75c570d215a","weight":2},{"event_id":8201,"event_guid":"3712beb2-12f2-552a-b831-b0cd5e4527ab","weight":6},{"event_id":8205,"event_guid":"be0461ef-ad9f-51cb-be5a-f6dd3adf091e","weight":2},{"event_id":8208,"event_guid":"b1e00343-506c-51c4-92f5-6483562760d0","weight":2},{"event_id":8216,"event_guid":"d69cd444-9df3-5e9b-a79f-b70b7b3ec98d","weight":3},{"event_id":8218,"event_guid":"ee10b98c-7538-5354-b486-66e363cbb44f","weight":2},{"event_id":8221,"event_guid":"75a12486-070c-539d-b4a9-a9495c86b78d","weight":2},{"event_id":8223,"event_guid":"96770b24-6aa8-53b1-9766-cc72e2e179c1","weight":2},{"event_id":8224,"event_guid":"21ff694c-e8f9-5aed-94bc-0efa78f93132","weight":2},{"event_id":8226,"event_guid":"175f6e41-1cf4-5733-b656-5c990453fe2c","weight":4},{"event_id":8227,"event_guid":"8cde9720-65a3-5463-b9e8-aa8bfb6416b4","weight":3},{"event_id":8228,"event_guid":"0f38a37f-f2fe-5a70-9640-2614c3c9e050","weight":5},{"event_id":8230,"event_guid":"fcf859a5-a914-5ac2-98c6-66af0328bd6f","weight":3}]},{"guid":"6cfe5b4a-6517-5f03-acfd-254718f91f57","title":"Detection of refugee boats on the Mediterranean with a drone by using FOSS","subtitle":null,"slug":"35c3oio-77-detection-of-refugee-boats-on-the-mediterranean-with-a-drone-by-using-foss","link":"https://pretalx.35c3oio.freifunk.space/35c3oio/talk/BJMGW8/","description":"As NGOs continuing searching the Mediterranean by boat and a few planes, it would be good to find additional effective ways to find people in distress in the sea. To be able to search a huge area in the Mediterranean its good to get more eyes in the sky. For this purpose I want to show you and discuss computer-vision approaches to detect refugee boats which are able to run on basic minicomputers (like the RPI) which are cheap enough to put on a simple drone. All done by using free open source software. Furthermore I want to present a dataset and the current codebase which enables you to help searchwing/seawatch to work on the topic","original_language":"eng","persons":["Petrosilius"],"tags":["35c3-oio","77","2018"],"view_count":93,"promoted":false,"date":"2018-12-27T21:00:00.000+01:00","release_date":"2019-11-30T01:00:00.000+01:00","updated_at":"2026-01-14T11:30:10.632+01:00","length":3424,"duration":3424,"thumb_url":"https://static.media.ccc.de/media/congress/35C3-oio/77-hd.jpg","poster_url":"https://static.media.ccc.de/media/congress/35C3-oio/77-hd_preview.jpg","timeline_url":"https://static.media.ccc.de/media/congress/35C3-oio/77-hd.timeline.jpg","thumbnails_url":"https://static.media.ccc.de/media/congress/35C3-oio/77-hd.thumbnails.vtt","frontend_link":"https://media.ccc.de/v/35c3oio-77-detection-of-refugee-boats-on-the-mediterranean-with-a-drone-by-using-foss","url":"https://api.media.ccc.de/public/events/6cfe5b4a-6517-5f03-acfd-254718f91f57","conference_title":"35C3: Open Infrastructure Orbit","conference_url":"https://api.media.ccc.de/public/conferences/35C3-oio","related":[]}]}