Work by UW CSE’s Sidhant Gupta is featured on Hack A Day:
“What if you could add gesture recognition to your computer without making any hardware changes? This research project seeks to use computer microphone and speakers to recognize hand gestures. Audio is played over the speakers, with the input from the microphone processed to detect Doppler shift. In this way it can detect your hand movements (or movement of any object that reflects sound).”
Read the post and watch the amazing video here.