According to relevant regulations, a credit card must be countersigned after it is opened. In foreign countries, cardholders pay by signature. In China, most people still choose to set passwords for credit cards, but merchants still have the responsibility to check the signatures. When using a credit card, the cashier has the right to cancel the purchase and refuse to sell the goods if he finds that the signature does not match the signature on the credit card. Although many businesses are not so serious at present, consumers still need to establish credit card security awareness. According to the customer service staff of a credit card center of a state-owned bank, the risk of credit card theft caused by unsigned settlement will be borne by the merchant, and the credit card will be stolen without signature, and the responsibility will be attributed to the cardholder. It is worth noting that the credit card signature cannot be altered, otherwise the signature is invalid. In case of wrong signing, apply for a new card. In addition, when the cardholder withdraws money from the ATM of the bank, if there is something wrong with the machine and the card is swallowed, the bank staff can also check the signature on the back of the bank card with the signature on the register if the identity of the victim cannot be verified, so as to handle the card return business. Skills of applying for a credit card online There are age requirements for applying for a credit card, that is, the applicant for the main card should be 65,438+08 ~ 60 years old (25~60 years old for foreigners) and the applicant for the auxiliary card should be 65,438+04 years old (inclusive). Master card holders can apply for supplementary cards for immediate family members (parents, spouses or children). Secondly, when applying for a credit card, providing sufficient financial proof materials will help to increase the credit limit. Proof of financial resources can be salary records issued by banks, or income tax withholding certificates (tax payment certificates), or market value certificates of houses, cars, deposits and investments. Can prove your economic level. The real estate license must have the name of the person or spouse and the relationship certificate; My name must be on the car registration card. After the above introduction, you should understand whether the credit card needs to be signed. I hope it helps you.