These sonar-equipped glasses could pave the way for better VR body tracking

Researchers at Cornell University have developed a wearable with batlike sonar that could improve upper-body tracking in virtual reality and other applications. The Cornell team fitted a generic pair of eyeglasses with a tiny sonar system, demonstrating how acoustic signals can be used instead of cameras to capture the body's movement. Not only would sonar be more efficient in terms of battery consumption, the team told the Cornell Chronicle, but it would also do away with the privacy risks that...