Google's Advanced Technology and Projects (ATAP) team has been working on Project Soli since 2015. The gesture-based system uses broad beam radar to detect and capture hand movements, turning them into commands for mobile devices. Until now, though, the tech has been restricted, with some companies -- including Facebook -- claiming that the high frequency levels required might interfere with existing technology. Now, the FCC has granted a waiver that will allow Soli to operate at higher levels than currently allowed, and therefore continue development as Google originally intended.