Discovered in the files of the United States Patent and Trademark Office (USPTO) is an item from Google that reveals the company is exploring eye-tracking. Why would they be working with such technology? For when Glass is reintroduced to the world. It would eliminate some of the actions that require voice commands or touch by simply replying upon eye movement.
The optical paths noted by the filing include display, ambient, and eye tracking. The display optical path is the standard display that Glass users already saw. The ambient optical path monitors light sources. The eye-tracking optical path, however, is completely new and can be spotted on item 124 in the image above. It captures images of the eye to see where it is focused.
Source: USPTO
Via: 9to5Google
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