New Laser Tech allows you to write on air without gloves

New Laser Tech allows you to write on air without gloves

"The problem of tracking hands and fingers on natural scenes has received much attention using passive acquisition vision systems and computationally intense image processing. We are currently studying a simple active tracking system using a laser diode..." Pretty awesome videos as well...

http://www.k2.t.u-tokyo.ac.jp/fusion/LaserActiveTracking/