I ask all my friends if they have a store card and if they do then I take a photo of it on my phone. When I go to a store I use one of the cards at random. The checkout barcode readers will read the barcode from a photo just fine. It's a win-win because the friend receives the bonus points and I feel good because I threw out decoy chaff to avoid being tracked.
Krogers knows what I have purchased because I use my rewards card.
I ask all my friends if they have a store card and if they do then I take a photo of it on my phone. When I go to a store I use one of the cards at random. The checkout barcode readers will read the barcode from a photo just fine. It's a win-win because the friend receives the bonus points and I feel good because I threw out decoy chaff to avoid being tracked.