I thought of this idea a while back. I figured it would be great to have a wireless mouse built into my cell phone so I don't have to carry an additional mouse with my laptop. Then I came across this...
http://hackedgadgets.com/2006/08/15/...l-phone-mouse/
Now, I always thought of actually embedding an optical mouse in the phone case itself...is it really possible to use the phone as a mouse using the camera, or not? the video looks faked to me, you never see the screen and phone moving in one shot.
.
.