Method for mediating card payment using biometric data

摘要

The present invention relates to a method for brokering an offline merchant's card payment using the user's biometric information, and more specifically, a variable token corresponding to the user's actual card information registered in the payment brokerage server or a fixed token mapped to the actual card information. Instead of receiving the variable token corresponding to the card payment from the payment server every time, the payment intermediary server issues the variable token generated from the user's biometric information, and can use the variable token to perform card payment at the offline merchant. It is about the intermediary method of card payment.