This technology is not limited to just flat table surfaces, but can also be used on walls or any flat panel---including flat screen monitors too. It's based to similar technology as the touchscreens we have now for the tablet PCs.
I just want to see how thin we can get this thing. Perhaps try to embed everything into something as thin as glass. That will be something. Oh wait, the video shows that already, lol. Great stuff. Can't wait to get it in the future. You all know we're headed that route. 5-10 years from now, we could probably see that on home computing.