Unable to query. Bank of Communications credit card security code can only be viewed on credit cards, while mobile banking can only view credit card limit, bills and other functions. The security code of credit card is related to the security of credit card, so it can't be viewed in mobile banking. The security code of a credit card is equivalent to the ID card of a credit card. We can use this code for consumer transactions. You don't need a password to shop on overseas websites. As long as the buyer provides the account number and security code, the transaction can be completed. In China, there are also merchants who sign contracts with banks, but they can complete telephone transfer without a credit card password.