The Tobii EyeX eye-tracking controller is a small USB 3.0 device which fastens to the bottom of your monitor, more or less permanently, to allow you to control some games and programs with your eyes.  The reviewer at The Tech Report discovered something unique about himself while conducting this review, while the five people he had try the EyeX the setup was flawless and easy, however his own eyes proved quite problematic.  An upgrade to his glasses seems to have mostly mitigated the issue, however it might be worth remembering if you pick one up and have issues during calibration. 

Once the EyeX was set up it worked in game, with some small issues which were not game breaking.  Of more interest is the final page of the review, combining the EyeX with the Gazespeaker software form a potent duo to help those who have difficulties communicating in other ways.  If you play games which benefit from eyetracking or know of someone who could benefit from Gazespeaker you should check out the full review.

"Tobii's EyeX eye-tracking controller promises to add more interactivity to some games by letting players take over certain in-game actions using nothing but the direction of their gaze. We spent some eyes-on time with the EyeX to see how it works."

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