Unless he's using cash, make no mistake, his purchases are being tracked in some capacity. Why do you need a store card when a credit/debit card track has more

Unless he's using cash, make no mistake, his purchases are being tracked in some capacity. Why do you need a store card when a credit/debit card track has more than enough information to identify? - Card number (useful on its own as an identifier) - Name (not perfect, decent secondary info) Granted, these don't generally make for a super-continuous history on someone, but they're pretty decent for the average person for a year or two. Also, if you make any returns at one of these stores that you've previously used a CC, your real state-issued ID will be correlated with your purchases (via your CC). Also, if you do any online shopping with a retailer and use the same cards in the store: instant correlation. Checks? Necessarily correlated with DL and account numbers, even better than CCs. Outside of cash: there're just too many ways to establish purchase histories for most individuals.