Logisys has developed an 800 dpi optical finger mouse which works on any media except reflective glass surfaces. You strap it onto your index finger and move the cursor by swinging your finger around using the thumb to control the left button, right button, and scroll wheel. It sounds like a good idea, but there are a few problems. First of all, how are you supposed to type with it on? Second of all, look at it. It's huge. Not everybody competed in the finger Olympics and can lift a car using their pinky. I mean I can, but I can also rip a telephone book in half and bend a wrench into a pretzel.