Entertaible

Futnuh brought my attention to this interesting item: the Entertaible. The article says it uses IR Led's and receptors around the edges. I'd be interested to know more about how it works. I'm guessing the resolution is limited to the number of LED's and so it's probably pretty low. Cool stuff though. I'd like to make some similar software where multiple people can play games on a table like surface. The combination of real game pieces and an LCD table is also interesting (but it has been done before).