University of Washington (UW) computer scientists have shown it is possible to leverage the Wi-Fi signals around us to detect specific movements without needing sensors on the human body or cameras.

By using an adapted Wi-Fi router and a few wireless devices in the living room users could turn off lights with a simple finger-swipe or change the song playing on their music system in the next room by moving their hand to the right.

“This is repurposing wireless signals that already exist in new ways,” said lead researcher Shyam Gollakota, a UW assistant professor of computer science and engineering. “You can actually use wireless for gesture recognition without needing to deploy more sensors.”

The UW research team, which includes Shwetak Patel, an assistant professor of computer science and engineering and of electrical engineering and his lab, have called the technology 'WiSee' and will unveil it at the 19th Annual International...