Only for one person though which isn't a great thing for TVs which generally have more than one person watching. Also the tracking is a bit of an issue, you'd h

Only for one person though which isn't a great thing for TVs which generally have more than one person watching. Also the tracking is a bit of an issue, you'd have to wear a little headset to accurately track your head when they were released. Now you could maybe get away with using a camera for tracking but now you've got the privacy worries of that happening.