[albeec13]

Frankly I'm shocked at how anemic the radar chip demonstration and marketing materials are compared to what they demoed about the chip a few years ago.

Google had video showing how they could differentiate individual finger motion and motions like rolling 2 fingers together to adjust volume up and down.

What they're shipping with Pixel 4 seems to have exactly one gesture: swiping a few inches above the screen to skip songs back and forth or silence alarms and calls.

You know what else had this feature? The 2013 Moto X. And it didn't use a radar sensor, just a group of 4 light sensors, one at each corner of the face of the phone.

Granted, if what they demoed a while back is accurate, the radar chip is much more capable than a few light sensors, but what they're shipping and marketing is not that. Either they were not able to make the proof of concept work in a shipping device, or the final product is not as capable as it seemed.