With a CC you don't get that much data since there's no relation between CC number (the one you store) and a customers data (address, age, gender). That's why t

With a CC you don't get that much data since there's no relation between CC number (the one you store) and a customers data (address, age, gender). That's why they invented loyalty cards. We're talking about brick&mortar retailers, online is different since you (may) ask all this data before any payment.