citic credit card: if you choose to spend by signature, just sign your name, and you don't need to show your ID or enter your password. If the store requires you to enter a password, please enter a 6-digit password at will. If the store asks you to show your ID card in order to confirm your identity, please try your best to cooperate. However, when you spend money in duty-free shops, the shops usually ask you to show your passport or boarding pass. Consumption by password is only valid on POS of UnionPay line, and VISA and MASTER lines do not check passwords to facilitate overseas consumption. Therefore, when swiping a card in China, if the merchant POS takes the MASTERCARD or VISA line by mistake, there is no need to verify the password, so there will be cases where the wrong password is entered or the password is not entered.

CCB: after the issuance of the international standard dual-currency credit card in August 23, the "domestic consumption password optional function" was first promoted in China in view of the cardholder's usage habits. Customers who use passwords in domestic consumption can also set their own limits without passwords.

Great Wall International Credit Card: generally, China Great Wall debit cards are used without passwords in shopping malls, because cashiers ask customers to show their ID cards to confirm their consumption.

China Merchants Bank Credit Card: You don't need a password when swiping a credit card, because the applicant chooses to pay without a password when applying. Of course, the applicant can also choose to pay with a password when applying (whether or not to pay with a password is suitable for different people's spending habits). When a certain amount is swiped, there will be a reminder.