US Patent 10922677 Service implementation using a graphic code including a biometric identifier

A display instruction associated with a graphic code is received from a terminal device and at a client computing device. A biometric feature identifier associated with a biometric feature that is verified by a server is obtained by the client computing device. A code string that includes the biometric feature identifier is generated by the client computing device. The graphic code that includes the code string is displayed at the client computing device, to permit completion of a service by the terminal device using the graphic code.