the top right corner of the signature column behind the bank card. The security code of HSBC bank card is also called CVV2 code, a seven-digit number, which is located in the upper right corner of the signature column behind the bank card. After this set of numbers is generated, only the issuing bank and the holder of the bank card know what the number is. The security code is equivalent to the ID card of a credit card, and it will be required to provide this code to complete the transaction when conducting online shopping or telephone remittance.