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How to treat the last three digits in the signature column of UnionPay card of China Bank?
You can directly see the last three digits in the signature column of UnionPay card of China Bank.

① CVV2 is the number printed in the signature area of Visa/MasterCard card;

② 3 digits after the credit card number;

③ The last three digits we usually see on the back of a credit card are CVV 2;;

After the credit card is replaced, even if the card number is the same, the CVV2 code behind it will change. It is just like the ID card of a credit card, so it must be kept well.

⑤ You can find a sticker to stick it up to avoid being stolen by others when swiping the card.