The "35C3 WiFi setup" app for Android is also available through F-Droid, using a separate repository maintained by F-Droid developer @Bubu (the main repository isn't agile enough to keep up with the chaotic demands of the congress). Find the repo here:

It also contains the Schedule app and c3nav.
Thanks to everyone involved!

Last year we had ESSID flooding. This years new annoyance: Hammering speedtest sites via wireless for >15minutes in a row.

If your network is shitty or we or @c3noc can improve it for you in any way, please let us know.

Bitte Mehrfachsteckdosen und Verlängerungskabel nicht vergessen. Plant nicht nur für Euch, sondern auch für andere mit. Danke!

Auf dem wird es leider noch keine 40G-Links in der Colo geben. Falls ihr Projekte mit 40G für den plant, lasst es uns wissen.

We're sorry we won't be able to offer 40G links in the colo. The backbone in not yet designed to handle these loads. If you're planning interesting projects which require 40G für the please let us know. - because anarchy is much more fun with friends. is a small Mastodon instance for and by the Chaos community surrounding the Chaos Computer Club. We provide a small community space - Be excellent to each other, and have a look at what that means around here.
Follow @ordnung for low-traffic instance-related updates.
The primary instance languages are German and English.