Tiny gestures could control wearable tech

Google's Project Soli is a chip that lets users make tiny hand gestures to control a device from outside its casing.

The chip uses radar and software to translate tiny finger movements into precise commands.

This could mean that in future screen size might no longer be important when designing gadgets.

BBC Click's LJ Rich looks at the potential for such a product.

More at BBC.com/Click and @BBCClick.