Meet AirBar: an innovative solution that brings touch gestures to your existing computer. You will be able to pinch, swipe, zoom, and do a whole lot more on your machine. The AirBar sensor projects an invisible light field over your screen, which means you can interact with your computer no matter what you are wearing.
The AirBar is a plug & touch device. It is compact and does not get in your way. You can pre-order one for 15.6″ laptops for $49.