Radar wristband turns your arm into a smartwatch trackpad

Researchers at North Carolina State University have developed technology that turns a smartwatch user’s forearm into a trackpad, allowing the user to scroll, zoom, click on icons and so on. The system relies on a radar system that tracks the movement of a user’s fingers on the forearm and monitors pressure on the skin of the forearm, providing the same level of force-touch detail available on laptop trackpads.