Future Tech: Touch Screen Anywhere

There are cameras, not currently available to the public, that allow movement on a flat surface such as a wall or whiteboard, to be captured to the user's computer. When such a camera is combined with a multi-media projector (pocket versions now available), the users desktop can be projected on any flat surface and the user's finger can be used as a mouse on that projection. Further miniaturization should allow an affordable and portable touch screen computer not much bigger than current cell phones.