Then, stores began offering loyalty cards, which required customers to scan a plastic card or key in their phone number at checkout to activate discounts. Now, many grocery store chains are ...

It seems like every store tempts customers to sign up for loyalty cards as a way to score discounts, rewards and rebates. But there’s something in it for them, too.

But not every loyalty program was designed equal to the others, so Newsweek has compiled a list of the top grocery store loyalty cards and how they stack up to each other.

For cards that don’t have a barcode, users are able to manually type their membership number in to add the card. Step 3: Use your card to collect points in-store.