Leap Motion

What is this exactly???

Well - best described by it's developers... "This isn’t a game system that roughly maps your hand movements.  The Leap technology is 200 times more accurate than anything else on the market — at any price point. Just about the size of a flash drive, the Leap can distinguish your individual fingers and track your movements down to a 1/100th of a millimeter."

The possibilities for interactive displays is exciting!
Check out the video on their website.