

Not particularly difficult. They already have Wi-Fi beacons in every store and I’d bet there’s a good chance they have Bluetooth beacons as well. With either one of those, it wouldn’t be difficult to track an individual’s position in the store with pretty significant granularity. Couple a position plus a unique device ID for the shopper’s phone (or combination of profiles adding in watch, headphones, etc), maybe even some UHF audio signals or additional Bluetooth signal from the price tag (which sounds like it updates wirelessly and therefore provides a whole additional network of location tracking in the store) and you could just about pinpoint where a person is tied with their purchasing history and behavioral analytics in real time.

Now do the Justice department.