I just remembered my friend tommo showing me this and though Id share it with the world as its so awesome.
The virtual laser keyboard works by using both infrared and laser technology to produce an invisible circuit and project a full-size virtual QWERTY keyboard on to any surface. The virtual PC keyboard behaves exactly like a real one: direction technology based on optical recognition enables the user to tap the images of the keys, complete with realistic tapping sounds(!), which feeds into the compatible PDA, Smartphone, laptop or PC via bluetooth. A Bluetooth dongle or compatible device is required.