US Patent 11127010 Electronic device, certification agency server, and payment system

An electronic device is provided. The electronic device includes a communication module configured to communicate with an external device, a biometric authentication module configured to perform biometric authentication, and a processor. The processor is configured to obtain biometric information of a user of the electronic device if a payment request is received, perform biometric authentication using the biometric information, send information associated with the biometric authentication to a first server located outside the electronic device, receive a session key, corresponding to the biometric authentication, from a second server located outside the electronic device, and send the session key and a payment token request to a third server located outside the electronic device.