Ok, I don't think that kind of setup will work as well as Lee's head tracking system, but it does open up some interesting options. One thing is that with a setup like that, you can track the direction where you're looking, as long as the sonsor bar is within the sight of the IR camera of the wiimote. Tracking the distance from the screen is not possible reliably, though, as the player is bound to move around the sensor bar and thus, as in another demo by Lee, it would require 4 IR leds arranged in a tetrahedron to accurately track the distance (an, as a nice bonus, also the absolute position).
Still, I can see some nice applications for a system like that, mainly in first person games, but you could control the camera in 3rd person games as well. And, for FPS games it would actually be pretty immersive to change view modes, target tracking etc. from the wiimote in your goggles.
One thing to remember is that companies file thousands upon thousands of patents, but a mere fraction of them are ever put to use. They do it as part of their IPR strategy, either to protect their innovations, to blow a smokescreen over their true intentions, or to prevent competitors doing things they would not like. So, something might come from this, but it might just as well be an idle patent.
