Isn't there an own thread for MS's motion controller tech.
I'd like if I come to a thread called "Sony's New Motion Controller", the discussion actually was about Sony's new motion controller, and that I wouldn't have to wonder what are the two cameras folks are discussing, and if I missed something form the Sony keynote, because I for sure didn't see two cameras in Sony's motion controller presentation
Sony controller hot issues would be:
* Shape of the controller (stick, "transformer" DS, or what). This may turn out to be quite important.
* Depth capture camera. They filed a new patent, now what ?
* Boundary conditions and fail cases (Graham mentioned that there could be interferences)
* How much ? and whether it's bundled.
As Asher mentioned, the hardware is relatively well understood from user's point of view. We have already seen EyeToy in action for the most part but it may not have the speed and accuracy of Natal without depth input. On the other hand, things like color, drawing, and simple motion detection may not require 3D motion tracking. So they may be on par on a hardware level there, but Sony is more matured in software in these areas.
Not sure what the depth capture camera patent filing implies. I'm assuming Sony will use standard pressure sensitive buttons and triggers, plus rumble in the new controller. The creative part lies in how to use it, especially the camera.
Personally, I think they should look more into drawing input. It's useful for media search and of course can be made into a game (like EyePet, and LBP).
EDIT: and here, Sony confirms that the new controller is a separate scheme altogether. SIXAXIS will still be the de facto controller:
http://gizmodo.com/5279079/sony-dual-shock-still-defacto-motion-control-secondary