Sony's new HMZ-T1 head-mounted display provides one of the most natural, realistic 3D experiences on the market, it but doesn't track head motion for gaming. However, the TrackIR 5 does — and if you put the two together, like one enterprising gamer has, you've got a virtual 3D gaming world that responds to your head and body movements. Setup simply involved clipping the TrackIR 5's sensors onto the HMZ-T1, calibrating the motion sensors as if they were being used in a standard PC gaming setup, and sending the video output to the head-mounted display. While a YouTube video can't show us how playable this setup actually is, the mirrored video output shows some solid motion tracking — assuming that's what the user sees on the HMZ-T1, this is a pretty clever way to hack together some virtual reality.