Eye tracking would track in much finer detail, and wouldn't require you to look off screen because the center would constantly be moving to the location of your eye's focus.
I just don't see this working, especially given the EyeToy's terrible accuracy dealing with colors and light as it is.
@Jaaau!
The EyeToy doesn't use Infrared technology as far as I knew. It is merely a simple 2D tracking camera with a microphone. The only way it can even track 3D space is by guessing that a "bigger" object in relative to it's location means it is moving closer, which is true, but with very weak color detection and lighting needing to be perfect, I don't see it working all that well. That's why Sony Motion REQUIRES those light balls on the end because without those, it couldn't track the things worth spit.
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