Google has today unveiled something pretty cool today, announcing a new feature for wearables that will allow you to use gesture controls in order to perform tasks on a device, replacing the usual physical controls on a smartwatch for your hands and a radar.
That radar is used to capture your movements, measuring doppler image, IQ and spectrogram. This is then sent to the Soli chip which can recognise movement, velocity and distance and can be programmed to perform an input based on those variables.
The chip will also work within the 60GHz spectrum at up to 10,000 frames per second, and once it has been finalised, Google say that it will contain everything it needs to be plug and play.
However that is still a work in progress.
Source: Project Soli