Wal*Mart bristles with cameras that store your car's license plate forever along with footage of you walking into the store.
At the checkout your picture is snapped. Facial recognition is used to determine your loss risk when you walk in the door and security is notified.
Wal*Mart is a private business - they can refuse you entry - but that was impractical until recently - they couldn't remember your face at all the Wal Marts, or unless you made a major pain of yourself probably wouldn't even remember you at a single Wal*Mart.
Now they could concievably bar someone from all Wal*Marts. This gives Wal*Mart far more power over their customers than LocalMart. Piss off Amazon and WalMart and you are kind of screwed. Their rules begin to have bite. It's almost as if Monopolies are like governments with the power to enforce their will - not only their will to keep competition out, but to keep their customers in line ( whatever that is ). Don't have the wrong opinions or they might choose to stop dealing with you.
Beware the social credit score