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matt-attackyesterday at 11:05 PM1 replyview on HN

I’m just how exactly does my credit card company know how much I paid for shampoo?


Replies

brewdadyesterday at 11:47 PM

Your retailer knows exactly how much you paid for shampoo. In most cases, they know it was exactly you who bought it. Data sharing agreements through direct or third parties complete the picture for both sides, retailer and card issuer.