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Why do supermarkets have loyalty cards? (feddit.uk)

submitted 6 days ago by pottery@feddit.uk to c/askuk@feddit.uk

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Can't they just track everything you buy using your payment card?

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[–] DarrinBrunner@lemmy.world 2 points 6 days ago* (last edited 6 days ago)

Hmm. They print out a receipt with everything I bought that trip. They can connect that to the card I used to pay. How do they not have all the purchases I make?

I think the loyalty card is just about pushing ads and "deals", and selling our data.

I don't use them, nor the apps, or any of that. I go to the store and buy my groceries once a week. I block ads everywhere. So, while they have the data, they don't have a path back to my brain, so I don't see whatever they're doing with it.