The beauty of the Microsoft Surface is that it not only displays things, it can "see" things. Place a specially tagged object on the table and Surface knows what it's. The downside? Microsoft Surface is a huge, "Mrs. Pac-Man"-like table that costs $10,000. But, Bill Buxton, thinks Surface technology will be available in an affordable device "no thicker than a sheet of glass" -- within three years. "Right now it has five cameras in it and a projector and a bunch of other stuff," Buxton said. It's not going to have any cameras or projectors because the cameras will be embedded in the device itself."