Hannover: tix - that's "ticket box" is the name of these machines. As 
in the new TW 2000 cars the driver won't sell tickets, all stops get
some tix. While they are easy to use and have a pleasing design, they
also have one disadvantage: tix only accept the "GeldKarte" as
electronic cash, a loadable chip similar (but not compatible) to the
phone cards. And the use of them is not really common now.

Photo by Sven Herzfeld (s.herzfeld@maschsee.han.de)