Matt I saw one of these when they were first being developed a few years back. They are quite difficult to use, and are uncomfortable to use for an extended period of time, as you are going to be banging your fingers on a hard surface.
Matt It's a lazer. They keyboard is projected onto a worksurface, and the lazer detects which keys you are pressing by the beam being broken.
Tina ohhh a like that. It would stop me from puttin me laptop om me knee tho. It does Looks pretty tho.
Sjdickso like matt says, they are very uncomfortable over long periods of use. I have tried on and didnt think much too it. Nice gadget though none the less.