You won't be surprised with touch technologies. Absolutely accidentally stumbled upon a video clip on Youtube: Beta Testing Sensorless Motion Capture Technology .
With the help of motion capture technology, the operator is transferred to a 3d environment, where he will have to communicate with virtual, sensory musical instruments. The technology is very similar to the project NATAL from Microsoft . Starring: Natasha Tsakos ')
Soon we will be like in the movies, gestures to switch channels on the TV, rewind video, turn on music and much more.