> There's left a lot to be desired in most (german) university networks. Yes, there is usually some sort of Radius and 801.1X infrastructure in place, but it's only used for WiFi login and eduroam, not for machines plugged into wall sockets.

When I was a student and later staff member at the Technical University of Kaiserslautern, Eduroam authentication infrastructure (801.1X) was also used to authenticate at ethernet ports in the walls of public rooms.