Signature flower on the back of credit card: \x0d\① Credit card is used in China, and it is password+signature verification, which mainly depends on password, and the cost of signature has little impact, so it is enough to provide other evidence to prove it; \x0d\② If it is used abroad, the payment depends entirely on the signature, and a new card needs to be replaced if the signature is spent; \x0d\③ Using signatures in China sometimes causes unnecessary troubles. For example, if you only bring a credit card without other identification documents, you may not be able to complete the payment; \x0d\④ The signature on the back of the credit card is invalid, so it is recommended to replace it with a new card and re-sign. \x0d\\x0d\ Credit card replacement: \x0d\① Send a letter to the electronic credit card center of the bank to inform that the credit card signature has been consumed; \x0d\② When you change your card at a bank outlet, you need to pay a handling fee around 50 yuan for your credit card; \x0d\③ After handling the card replacement business, just wait for the credit card center to reissue a new card; \x0d\④ The new card needs to be activated before it can be used.