If the table is on enough of a slope for the iPhone to detect rotation (yaw) it would work... But maybe I'm just hoping it does because the idea of headtracking for 3d is so fun (check out http://www.cs.cmu.edu/~johnny/projects/wii/ for a similar experiment with the Wii if anyone missed it)
http://tinyurl.com/yqh6zq
TUAW confirms that, if you set the iPhone on a tabletop, the iPhone returns 3 values:
- X: rotation around the short axis
- Y: rotation around the long axis
- Z: whether phone is face up or face down
I don't think this is possible... unless that table was actually at a 45 degree angle or something?