PS Wand Science and Origins Explained

Sony has released more detailed videos explaining the science and origins of the PS Wands.

Part 1:


Part 2:


I just hope the final version has a joystick on there. (We've yet to see a close-up of the device) You can't have complete camera control otherwise. Natal has the same problem. Looking around (camera yaw, pitch, roll) can be handled well enough through face tracking, but character lateral movement (camera X, Y, and to a certain extent Z) is simply impossible without some kind of control being instantly accessible to the player's hands (thumbs).