I was wandering around Digg.com and fell onto two very cool tech demos. Proof o concept type stuff. The first is a screen which allows multiple touch contact with discreet handling. Ie, u can put more than one finger to the screen and itll happily cope. Theres a snazzy video demonstrating it all. Its very pretty and looks very powerful. The method it uses to actually work is actually suprisingly simple, called Frustracted Total Internal Reflection. Check out the video on its homepage : mrl.nyu.edu/~jhan/ftirtouch/

The other demo is a Sony endeavour named Revolution or Data Tiles the basic principle