[0x1ch]

I play a bit of flightsim and our head tracking works the same way. Camera receives IR LED position for head movement axis, program does the interpretation of movement.

[extraduder_ire]

There's a homebrew head tracking demo [0] for the wii that has you put a sensor bar on your head, and a wiimote on top of your TV. I messed around with it over a decade ago and found it very convincing.

0: https://www.wiibrew.org/wiki/Headtracking

[20after4]

Very convincing indeed. IMO it's almost as good as (if not better than) head mounted VR goggles. At least it doesn't cause motion sickness.

The person who came up with that idea, Johnny Lee¹, went on to work on the xbox and I believe was also involved in development of the Kinect.

1. https://www.youtube.com/@jcl5m