"Amazon employees have been test driving Amazon Go, an experimental convenience store in downtown Seattle. The idea is to let consumers walk in, pick up items and then pay for them without ever standing in line at a cashier."
"Shoppers visiting an Amazon Go store will scan their smartphones upon entering. Cameras and shelf sensors will then work together to figure out which items have been removed and who removed them, the person says; there will be no need for tracking devices, such as radio frequency chips, embedded in the merchandise. When shoppers leave, algorithms will total the order and bill their Amazon account."
Now just imagine this being the standard along with a social crediting system, like the one being used in China. Become an unfavorable individual and get locked out. Add the capability of facial recognition coupled with the facial recognition glasses being employed by Chinese police, and it begins to become apparent how this collected data can be used.
Black Mirror had an episode in which the topic of social crediting was explored. It's worth the watch, if you enjoy that sort of thing.