Explore a groundbreaking gesture recognition system in this 20-minute conference talk from NSDI '14. Discover AllSee, a low-power solution that operates on various devices, including those without batteries. Learn how it extracts gesture information from existing wireless signals, consuming significantly less power than current systems. Examine the prototype's ability to recognize gestures on RFID tags and power-harvesting sensors, as well as its integration with smartphones for through-the-pocket scenarios. Delve into the system's architecture, challenges overcome, and impressive classification accuracies across eight gestures. Gain insights into the potential of this technology for always-on gesture recognition in smartphones, tablets, and Internet of Things devices.