The four elements in the bank card four-factor authentication service refer to the cardholder’s name, bank card number, ID number and mobile phone number reserved by the bank where the account is opened

, through UnionPay Use authoritative big data to verify the name, bank card number, ID number and mobile phone number reserved by the bank where the account is opened of the person being queried, to confirm that the bound bank card belongs to the person, to avoid the risk of fraud, and is mostly used in the card binding verification process.