Microsoft have very recently announced the latest in their line of state-of-the-art BlueTrack mice, the Wireless Mobile Mouse 6000 (you can see more on the Microsoft Hardware site).
BlueTrack mice use a brand new method of tracking the movement across a surface, which is actually a combination of the laser and optical methods. If your current mouse cost you less than £10 or came with your computer, chances are its an optical mouse – usually indicated by a bright red light on the bottom just after you lift it from the desk. Instead of using this wide-band optical beam, laser mice use the higher frequency and much more accurate laser light to track the surface as it moves. BlueTrack combines the best of these to make a mouse that can work on pretty much any surface. In fact the representative from Microsoft Hardware I had a chat with said the only thing it won’t do is glass that has just been cleaned (very transparent so difficult to get reflections of).
Check out the photos below for a product unboxing.