Google's small radars can identify objects

When Google unveiled Project Soli in 2015, the company said it has created a way to control things for future technology. Small Soli radars are small enough as a smartwatch and can capture movements with millimeters too, helping you control the volume of boxes.

But now , a research group from the University of St Andrews has used one of the first projects Soli to learn , a little technological trick: to recognize objects using radar.

This device is called RadarCat and works like any other radar system. A basic unites electromagnetic waves to a target, which spreads the return back to the base.

 The system measures the time that these waves as they need to go back and use this information to work on the shape of the object and how far it is. But because Soli Google radars are so precise that they not only find the outside of the building, but also the internal structure.

This system is terribly precise, but there are some limitations. For example, RadarCat confuses objects with similar material, such as aluminum beams of a MacBook with a aluminum scales. While it works well in solid objects with flat surface, it needs a little more time to get a clear signal for materials that are empty or oddly.