As last year, to promote our great podcasting solution Ultraschall (https://ultraschall.fm) one of the developers will bring a big ultrasonic (German: "Ultraschall") device. It will run Ultraschall on NixOS. It's in version 2.0. It got a lot of updates. Come and visit it to see all of them.

The image from the 38C3 was taken bei Leah (https://www.flickr.com/photos/leahoswald/54232981118/in/album-72177720322829890)