Many retail chains I've gone to have the capability to look up your entire purchase history via a credit card, or to refund a purchase to the card that was used

Many retail chains I've gone to have the capability to look up your entire purchase history via a credit card, or to refund a purchase to the card that was used. I don't know if they store the card details directly or if they store a hash, but they certainly have a way to tie your credit card to the video of your face leaving the store and (most likely) a video of your license plate as you drive away. Sell that to a data broker (as they certainly do in the US) and someone could potentially purchase a history of what you bought anywhere and when.