Touchless 3D input device using electrostatic sensors. OK, this is the future.
via vimeo.com
This demo is absolutely incredible. Reminds me of Engelbart's original and seminal talk about the new input device he created -- the mouse.
Also, imagine hooking this up with some 3D holographic display device. 3D input + 3D output = major hotness.
Someone needs to take this technology and make an air guitar game, STAT.