Pretty sure it was mentioned somewhere that they use NFC tags when you take items off the shelf & bluetooth beacons to determine where you are using your phone. It’s probably using image recognition only at a coarse level to determine that you’re a person.

SWE @ Nuro | Formerly Facebook/Google | Yale ’18 | alanliu.dev

SWE @ Nuro | Formerly Facebook/Google | Yale ’18 | alanliu.dev