Google’s Project Soli is one of Google’s latest cutting-edge experiments that could transform the way humans interact with technology. The technology uses a tiny radar that is small enough to fit into a wearable device such as a smartwatch or a fitness band. The radar can capture motions of your fingers at up to 10,000 frames per second, which is something that has never been done before. The final chip contains everything it requires to be plug and play including the antennas. The system uses broad beam radar, IQ, and spectrogram. Soli information will be released to developers later this year.
Source: https://thehackernews.com/2015/06/project-soli-gesture-recognition.html