A payment terminal configured to execute payment processing in accordance with payment method data managed by a management server , the payment terminal comprising: a biometric information reader device configured to read biometric information of a purchaser; a communication interface configured to communicate with the management server; a storage device ; and a processor configured to obtain the biometric information of the purchaser read by the biometric information reader device, obtain a terminal identifier information prestored in the storage device, the terminal identifier information being information identifying the payment terminal and a store in which the payment terminal is provided, send an inquiry command including the obtained biometric information and the terminal identifier information to the management server via the communication interface, receive a response command from the management server in response to the inquiry command via the communication interface, obtain payment method data including payment type data for specifying the payment method of the purchaser, the payment method data being included in the response command and linked to the biometric information and the terminal identifier information, and execute the payment processing in accordance with the payment method specified by the payment type data included in the obtained payment method data. a biometric information reader device configured to read biometric information of a purchaser; a communication interface configured to communicate with the management server; a storage device ; and a processor configured to obtain the biometric information of the purchaser read by the biometric information reader device, obtain a terminal identifier information prestored in the storage device, the terminal identifier information being information identifying the payment terminal and a store in which the payment terminal is provided, send an inquiry command including the obtained biometric information and the terminal identifier information to the management server via the communication interface, receive a response command from the management server in response to the inquiry command via the communication interface, obtain payment method data including payment type data for specifying the payment method of the purchaser, the payment method data being included in the response command and linked to the biometric information and the terminal identifier information, and execute the payment processing in accordance with the payment method specified by the payment type data included in the obtained payment method data. obtain the biometric information of the purchaser read by the biometric information reader device, obtain a terminal identifier information prestored in the storage device, the terminal identifier information being information identifying the payment terminal and a store in which the payment terminal is provided, send an inquiry command including the obtained biometric information and the terminal identifier information to the management server via the communication interface, receive a response command from the management server in response to the inquiry command via the communication interface, obtain payment method data including payment type data for specifying the payment method of the purchaser, the payment method data being included in the response command and linked to the biometric information and the terminal identifier information, and execute the payment processing in accordance with the payment method specified by the payment type data included in the obtained payment method data. <EOS>