Your credit card number should not persist in their system when you hand it to them, and it definitely should not be printed on hard copy. https://en.wikipedia

Your credit card number should not persist in their system when you hand it to them, and it definitely should not be printed on hard copy. https://en.wikipedia.org/wiki/Payment_Card_Industry_Data_Security_Standard https://en.wikipedia.org/wiki/Payment_Card_Industry_Data_Sec...