Google’s miniature radars can now identify objects

When Google unveiled Project Soli in 2015, the company presented it as a way to create gesture controls for future technology. Soli’s miniature radars are small enough to fit into a smartwatch and can detect movements with sub-millimeter accuracy, allowing you to control the volume of a speaker, say, by twiddling an imaginary dial in mid-air. But now, a group of researchers from the University of St Andrews in Scotland have used one of the first Project Soli developers kits to teach Google’s tech a new trick: recognizing objects using radar.

Every object has a unique radar fingerprint

The device is called RadarCat (or Radar Categorization for Input and Interaction), and works the way any radar system does. A base units fires…

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