Google’s Project Soli is an effort to design a touch-free user interface for interacting with electronic devices using tiny radars. The company unveiled Project Soli at Google I/O in May, 2015, and now it looks like Google has begun sending development kits to testers.

Engineer Alex Bravo has posted a short video showing a system for using Project Soli to type characters into a smartphone… by simply moving his fingers through air.

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