posted on Feb, 15 2007 @ 03:03 AM
I agree... why would it be fake? My guess is several optical devices, with fibreoptics to capture the image (the fibreoptics being the brush
hairs)... though it may be a camera, as if you looked, they pushed fairly heavily into the brush each time, perhaps to clear away brush hairs for a
camera?
a simple gyroscope setup (kinda like the tilt function in the ps3's controllers) to determine the brush's angle (it's not really 3D - it just
rotates the image) and the touchscreen to determine where the brush is on the screen.. info from the camera is sent via bluetooth to the cpu, and
viola! paint!