This is an article and movie of the virtual keyboard. Unbelievable. The article link is http://www.extremetech.com/article2/0,3973,539778,00.asp?kc=ETAV102049TX1K0100486 The movie link is (right click, "save target as") http://www.canesta.com/videos/keyboard.asf
that is cool, but you can tell that demo is fake. when the red light is turned on, you can actually SEE the light move outward. how often do you see light slowly extend outward when you turn on a flashlight? hehe
I have a watch that slows down time 100x, but still not slow enough to see light moving across the room.
Cool but its usefulness remains to be seen...much like speech recognition system, it may generate a lot of "typing" errors...in the end it may be worse than simply writing with graffiti.