Wiimote Hack for Multitouch Display

Incredible Wiimote Hack Creates Multitouch Display: "Using a Nintendo Wii remote and some software that he ginned up himself, Johnny Chung Lee of Carnegie Mellon University took a few ballpoint pens, replaced them with IR lights, and presto! Since the Wii tracks IR lights, Lee found that practically any surface -- a projector screen, a tabletop, an LCD screen could be turned into a multi-touch screen "

We use a lot of interactive whiteboards here at school, but this technique seems more useful and easy. Multipoint looks amazing.