Smart glasses can ‘hear’ where you are looking.

EYE movements; EYE tracking; AUDIO frequency

Researchers at Cornell University have developed prototype smart glasses that can track eye movements using a technique similar to sonar. The glasses use tiny speakers to broadcast sound at a frequency above 18 kilohertz, which is reflected and picked up by microphones on each side of the glasses. An artificial intelligence model then interprets these sounds to determine the direction of the wearer's gaze. In tests, the glasses were able to track gaze with an error rate of just 3.6 degrees. This technique offers advantages such as lower power consumption, increased privacy, and potentially lower cost and weight compared to current camera-based methods. [Extracted from the article]

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