▲ 24 ▼ Why do supermarkets have loyalty cards? (feddit.uk) submitted 1 month ago by pottery@feddit.uk to c/askuk@feddit.uk 23 comments fedilink hide all child comments Can't they just track everything you buy using your payment card?
[–] pottery@feddit.uk [S] 2 points 1 month ago So the supermarket can't see your card details? permalink fedilink source parent