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Gesture control, devices that recognize different people, and tricks to make a screen feel as if it has physical buttons could be coming to your gadgets.
Via an ordinary webcam, a startup puts simple gestural control in the palm of your hand.
A prototype tablet can sense gestures, and objects placed next to it.
A new app superimposes imagery over your smart-phone view, and lets you interact with it via hand gestures.
But the Holy Grail—controlling a computer without touching it—proves hard to achieve.
The first sign-language dictionary that’s searchable by gesture.
Samsung and Reactrix move beyond touch screens and try to make hand waving the next big computer interface.