Did MS find this in an old "Practical Electronics"

Make your own touch screen PC with an old back projection TV, five govt surplus infrared video cameras and a high spec multiprocessor umm - PC. Have it do party tricks for under a million dollars in software development per trick. Get rich by selling for $10,000 each to hotels, casinos and restaurants. Make big bucks on shipping and installation.

Actually it's a stealth prototype for the Zune phone, so MS can be sure they've got the UI right. (Sir! - please don't put anything on the table; it doesn't work if you put things on it).