RFID tags as anti-theft measure have been around for decades. One of the latest I've seen records BlueTooth ids from phones if it's long enough in the vicinity. That"s because it doesn't want to register passers-by, but only the thief, I guess.
I'm not aware of any of these systems that are being fed into the marketing system. That doesn't mean somebody isn't doing that, of course. It's just not mainstream.
Smartphones aren't too often on the thief's shopping list, as most can be traced and disabled remotely.
Dunno about the camera's. Technically it seems possible, but AFAIK they're not in use broadly, yet. Maybe airports and such, but not supermarkets.
In supermarkets, you might encounter "beacons". These register all phone ids from passers-by and could fire a personal promo or ad to your phone. Market acceptance has been low because of privacy issues. I think these are created by Apple.
The major difference is, RFID tags in general contain no battery, they are powered by an RF transmitter nearby. Beacons are powered by mains or rechargeable battery.