Gesture control uses WiFi doppler shift article tells that researchers at University of Washington have built a WiFi-based gesture control system. The system uses doppler shift in Wifi signal combined with Software-Define Radio (SDR) to detect humans moving near the devices. The researchers see WiSee as a novel interaction interface that leverages ongoing wireless transmissions in the environment (e.g., WiFi) to enable whole-home sensing and recognition of human gestures. WiSee claims to be the first wireless system that can identify gestures in line-of-sight, non-line-of-sight, and through-the-wall scenarios. It may be possible to build the technique into future WiFi devices as requries no change to current standards.
The demo video shows this man waving his arm to adjust the volume of his home entertainment system.
Is this the ultimate controlling method for home electronics or does this become a new means to spy people?