I don't believe that chip and pin data is stored locally. Assuming that the payment records were from point-of-sale equipment then the entire transaction, inclu

I don't believe that chip and pin data is stored locally. Assuming that the payment records were from point-of-sale equipment then the entire transaction, including customer information is end-to-end encrypted and wouldn't (couldn't) be stored by the retailer [0]. I guess this either means that mag-stripe transactions do involve storing the card number locally, or there's something else at play here. [0] https://sumup.com/emv-credit-card-chip/ https://sumup.com/emv-credit-card-chip/ (My knowledge of this is limited, so I'd be very interested if I've misunderstood this).