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 Video in the link so you can see it working.
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GitHub - NicholasSlattery/sony-head-tracker: Use the motion sensors inside Sony headphones as a low-latency Windows head tracker for OpenTrack and simulator games.
Use the motion sensors inside Sony headphones as a low-latency Windows head tracker for OpenTrack and simulator games. - NicholasSlattery/sony-head-tracker