Your smartwatch might be more capable than you think. Researchers at Cornell University and KAIST in South Korea have developed a system called WatchHand that turns any regular smartwatch into a hand-tracking device.
The best part is that it doesn’t require any extra hardware to do so. According to the published paper, the technology uses AI-powered micro sonar to read your hand movements and finger positions in real time, and it works using hardware your watch already has.
So, how does WatchHand actually work?
Your smartwatch has a built-in speaker and microphone. WatchHand puts both to work in a way you’d never expect. The speaker emits inaudible sound waves that bounce off your hand and back into the microphone, creating a unique echo pattern.
Cornell UniversityAn AI algorithm running directly on the watch reads that pattern and maps your hand position in 3D.
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