In the entry room to the hackerspace c-base, a hand and body scanner was installed. The scanner determines if a visitor is human or alien and generates an alarm if he is infected with dangerous viruses. The installation involves some wood, many small LEDs, a few photo sensors, two rotating alarm lights, four speakers, a touchscreen, an old motor to drive the body scanner and lots of old circuit boards and pipes.
Like most of the c-base and its air lock, the scanner was a community project and as such involved the free time of lots of great people. Among others, the soldering and electronics was mostly done by Thilo Graf, most of the screen design was done by Marten Suhr and Ulrich von Zadow did the programming. The images that are used in the body scanner come from the visible human project and are used with kind permission.