Re:2d treadmills, motion sickness and Redirection (Score 1)

Tracking movement works quite well. We are currently using a ISense Cube. The cable we have is extended to about 12 feet with the person on a treadmill or pad type device. If you want people to be free roaming then you need longer cables, wireless, or self contained. Longer cables and wireless might lead to latency problems.

If you made a self contained apparatus then you still need position tracking that will have the same issue also the further away the trackers, they become less accurate. For example, we have used Flock of Birds that has a range of about 3.05 meters. I suppose you could do a design with tons of trackers that are evenly spaced out but that would cost a lot of money.

I know there are other methods but basically small controlled environments are easier to handle.