CCC Hamburg Door Lock Widget Desktop widget that indicates the main entrance door lock state at the Chaos Computer Club in Hamburg. A switch in the door frame at the CCC Hamburg registers locking / unlocking events. The current state is exported to a webserver. This widget shows an icon on the desktop indicating whether the door is open or locked and optionally notifies the user upon state changes. Note to visitors: A locked door doesn't necessarily mean that nobody is home. Often only the lower floors are populated. Join #ccchh on IRCnet.