Cornell’s EchoMotion tracks full-body movement with smartwatch

Researchers at Cornell University have developed a technology called EchoMotion that uses an off-the-shelf smartwatch's built-in speaker and microphone alongside an artificial intelligence model to track full-body movement using ultrasonic sound waves. The active acoustic sensing system requires minimal battery power and preserves user privacy compared to camera-based setups. Tests on unmodified smartwatches demonstrated high accuracy in tracking joint locations during various exercises, pointing toward future applications in fitness tracking and physical rehabilitation. Open article →