Google paid passers-by for face scans to improve the Pixel 4
 

Reports have swirled for days of Google paying people $5 in gift certificates to scan their faces, and now it's clear just why: it's for the Pixel 4. Google has confirmed to The Verge that the paid scans were meant to improve the accuracy of the Pix...

https://www.engadget.com/2019/07/29/...prove-pixel-4/