https://techcrunch.com/2019/07/29/googles-pixel-4-smartphone-will-have-motion-control-and-face-unlock/

Google’s Pixel 4 is coming out later this year, and it’s getting the long reveal treatment thanks to a decision this year from Google to go ahead and spill some of the beans early, rather than saving everything for one big final unveiling closer to availability. A new video posted by Google today about the forthcoming Pixel 4 (which likely won’t actually be available until fall) shows off some features new to this generation: Motion control and face unlock.

The new “Motion Sense” feature in the Pixel 4 will detect waves of your hand and translate them into software control, including skipping songs, snoozing alarms and quieting incoming phone call alerts, with more planned features to come, according to Google. It’s based on Soli, a radar-based fine motion detection technology that Google first revealed at its I/O annual developer conference in 2016. Soli can detect very fine movements, including fingers pinched together to mimic a watch-winding motion, and it got approval from the FCC in January, hinting it would finally be arriving in production devices this year.