A new interface lets you keep your phone in your pocket and use apps or answer calls by tapping your hand.
Over time, using your smart-phone touch screen becomes second nature, to the point where you can even do some tasks without looking. Researchers in Germany are now working on a system that would let you perform such actions without even holding the phone—instead you'd tap your palm, and the movements would be interpreted by an "imaginary phone" system that would relay the request to your actual phone.
The concept relies on a depth-sensitive camera to pick up the tapping and sliding interactions on a palm, software to analyze the video, and a wireless radio to send the instructions back to the iPhone.
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