You can now use your Sony headphones as a free real-time head tracker for race and flight simulators on PC, several hundred games already supported — enthusiast creates open-source app that translates live sensor data into in-game camera controls

Summary

A new open-source app called Sony Head Tracker, developed by Nicholas Slattery, reads raw sensor data from Sony headphones and earbuds and converts them into something OpenTrack can understand. From there, it can be used for head tracking in over 200 PC games.