Within the framework of a Transportation project, Kontron has developed an Intelligent Display Unit (IDU) for the surveillance of passenger doors on the train. The display is also used to show train diagnostics and configuration. This unit is based on an industrial PC architecture (Pentium M) working with standard operating systems like XP Embedded and Linux. The PC104/104+ extension bus also allows adding various railway-specific busses like MVB communication or video surveillance with image incrustation. The strong points of this system are low consumption, resistance to industrial temperature ranges from -25°C to +70°C, excellent shock and vibration resistance, and ability to work under 24V, 72V or 110V.