When using a credit card (credit card) abroad, generally you do not use a password, but a signature to take effect. If you swipe someone else's credit card (debit card), you need to sign the other person's name. If the signature note is different, the merchant will not allow the user to swipe the credit card (debit card) for consumption. In China, you only need to enter a password for consumption, and the cashier does not read the user's signature. Therefore, it is best to use your own credit card (debit card) to make purchases at Sanya Duty Free Shop.

Moreover, if you use someone else's credit card (credit card), even if the credit card (debit card) is successfully used, the cardholder only needs to indicate that the consumption was not his own, and the credit card (debit card) will be stolen. Then the user may also need to bear criminal liability.