Impressed me more than I expected. I imagine the technology is great, but I bet the applications are near impossible to make and surely unsupported by the vast majority of things you'd want to do. The demonstrations used in the video were most likely made by the developers of the hardware. After buying one, you're kinda SOL, unless they release their personal developments publicly. If this thing has any chance of survival, they need it to be natively supported by some major brand (e.g. the Valve Source Engine, similar to the head-leaning detection software) or need to make a sort of hub for software developers to publicly share their creations.

The latter is probably most efficient. I hope it works out, but I'm betting it doesn't. As most things like this don't. They are great in concept, but success is about application.