Make any surface a multi-touch input tablet

[thanks to K for the ref.]
All of us by now know about the multi-touch iPhone, and some have even seen/heard of Microsoft Surface, the multi-touch tablet. Surely, a great way to interact with the computer.

Also, we know about the Nintendo Wii, the uber-cool game console that is making people fit, in addition to entertaining them :).

Along comes CMU's Johnny Lee, and gives us this:


Now that is what smart people can do - provide a cheap way of using existing technology to provide the masses with something that would have cost an arm and a let otherwise.

respect!