Not too long ago, the invisible iPhone was nothing more than satirical fodder for the Onion. Now, Patrick Baudisch and his team of researchers at the Hasso-Plattner Institute have moved closer to making it a reality, with a new interface that can essentially transfer an iPhone touchscreen to the palm of your hand. The device involves an Xbox-like depth camera, mounted on a tripod, that can register the movements of a person's finger across his or her palm. Special software then determines the actions these gestures would execute on a user's iPhone, bef
