Matson's prototype headset includes both audio input and output channels in addition to the heart rate monitor, relaying information via bluetooth to a hacked Xbox 360 controller. He developed a custom shooter game using Unity that ramps up the difficulty as the player's heart race increases, encouraging the player to stay cool and collected. The Immersion headset isn't a commercially available product, and it's uncertain if it ever will be, but Matson does offer a few glances at the prototype model on his website.
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