Will Your Next Touchscreen Be Touchless?
forgot_my_username writes "The MIT Media Lab is developing a motion screen computer. It looks back at you. It measures light and gestures, and uses those to control the interface. 'Imagine every pixel on your LCD screen emitting light could also be receiving light,' said Ramesh Rakar, an Associate Professor at the Media Lab. They even mention the health benefits of not touching displays."
I prefer the keyboard. It's still the most effective input method and the fastest way to manage your computer and smartphone (provided you learned the hotkeys and commands).