System, gate device, control method for gate device, and storage medium

A gate device connected to a server device that performs a first biometric authentication using biological information of each of a plurality of users, comprising:

• a memory storing instructions;
• and
• a processor connected to the memory and configured to execute the instructions to:
• request, when a first user is detected in an authentication area a predetermined distance away from the gate device, the server device to perform the first biometric authentication on the detected first user;
• register biological information of the first user who succeeded in the first biometric authentication in a list of successfully authenticated persons;
• execute, when a second user is detected at a first position closer to the own device than the authentication area, a second biometric authentication using biological information of the second user detected at the first position and biological information registered in the list of successfully authenticated persons;
• execute, when a third user is detected at a second position in the own device, a third biometric authentication using biological information of the third user detected at the second position and biological information registered in the list of successfully authenticated persons;
• and
• permit, when the third biometric authentication is successful, the third user to pass through a gate, and
• notify, when the second biometric authentication is successful, the second user that the second user can pass through the gate.

A method for controlling a gate device executed by a computer included in the gate device, the method comprising

• requesting, when a first user is detected in an authentication area a predetermined distance away from an own device, a first biometric authentication on the detected first user to a server device that performs the first biometric authentication using biological information of each of a plurality of users;
• registering biological information of the first user who succeeded in the first biometric authentication in a list of successfully authenticated persons;
• executing, when a second user is detected at a first position closer to the own device than the authentication area, a second biometric authentication using biological information of the second user detected at the first position and biological information registered in the list of successfully authenticated persons;
• executing, when a third user is detected at a second position in the own device, a third biometric authentication using biological information of the third user detected at the second position and biological information registered in the list of successfully authenticated persons;
• permitting, when the third biometric authentication is successful, the third user to pass through a gate;
• and
• notifying, when the second biometric authentication is successful, the second user that the second user can pass through the gate.

A non-transitory computer readable storage medium storing a program that causes a computer mounted on a gate device to execute processes of:

• requesting, when a first user is detected in an authentication area a predetermined distance away from an own device, a first biometric authentication on the detected first user to a server device that performs the first biometric authentication using biological information of each of a plurality of users;
• registering biological information of the first user who succeeded in the first biometric authentication in a list of successfully authenticated persons;
• executing, when a second user is detected at a first position closer to the own device than the authentication area, a second biometric authentication using biological information of the second user detected at the first position and biological information registered in the list of successfully authenticated persons;
• executing, when a third user is detected at a second position in the own device, a third biometric authentication using biological information of the third user detected at the second position and biological information registered in the list of successfully authenticated persons;
• permitting, when the third biometric authentication is successful, the third user to pass through a gate;
• and
• notifying, when the second biometric authentication is successful, the second user that the second user can pass through the gate.