Motion control really doesn’t get better than this. Leap Motion have come up with Leap 3D, a super accurate motion control system. It can track motion at around 0.01mm of accuracy which is 100 times better than Microsoft XBOX Kinect.
From the video and the demo they show, this could really transform the way we use our computers. Instead of using a mouse we could use gestures like pinch to zoom on a picture or scrolling up and down on a web page.
It is a very small device compared to the Kinect and hooks up to your computer via USB. It has special sensors and cameras which track the movement made by you to a high degree of accuracy.