Wall of Pong

Why Pong at home when you can Pong anywhere you can zap a laser at a flat surface? Students at Cornell have created laser Pong, where the "ball" is a laser-projected dot and the paddles are motion sensitive with sensors that detect whether you've "hit", and send the ball in a ricochet judged by a mobile processor. [GT]

Students create laser Pong [via Slashgear]