If you have Sony headphones, you may be able to use them as a headtracker with this free software

Your audio device may have just gotten much more useful.
Tom's Hardware on MSN

Open-source app turns your Sony headphones into real-time head trackers for PC games

A new level of immersion for free.

Developer turns Sony's headphones into real-time head tracker for PC simulators

It's an ingenious way to use OpenTrack and Sony's high-end headphones and earbuds. Most modern, high-end headphones and ...

A free app lets Sony headphones do head tracking for racing and flight sims

Head tracking, often used to enhance awareness in driving and flying games, traditionally requires extra IR tracking hardware ...