Because in developed countries such as Europe and America, credit card spending is based on signature, and there is no need to enter a password.

Therefore, after customers swipe their cards, businesses in Europe and America will check whether the signature on the signature column on the back of the credit card is consistent with the signature on the POS receipt, and some even check their identities, such as asking them to show their driver's license and passport.

if it is not the person, the merchant will cancel the transaction or refuse to use the credit card to pay, or even report to the police, because if it is their mistake that leads to the fraudulent use of the card, the loss will be borne by the merchant.

so if you go to developed countries such as Europe and America, it is not recommended to do so.