Locking and unlocking system, portable terminal capable of communicating with server, locking and unlocking method executed by portable terminal, and non-transitory storage medium storing program

A portable terminal capable of communicating with a server, comprising:

• a service providing unit configured to provide a use reservation service for a vehicle or facilities by communicating with another server, the other server being different from the server;
• a first sending unit configured to send a first signal to the server in response to a request from the service providing unit, when a first operation is performed during execution of processing by the service providing unit for providing the use reservation service, the first signal requesting authentication information used for locking and unlocking the vehicle or the facilities;
• and
• a first receiving unit configured to receive the authentication information from the server,
• wherein the server is managed by another organization different from an organization managing the other server.

A locking and unlocking method executed by a portable terminal, the portable terminal including a service providing unit, a first sending unit, and a first receiving unit, the portable terminal being capable of communicating with a server in which authentication information is stored, the locking and unlocking method executed by the portable terminal comprising:

• providing, by the service providing unit, a use reservation service for a vehicle or facilities by communicating with another server, the other server different from the server;
• sending, by the first sending unit, a first signal to the server in response to a request from the service providing unit when a first operation is performed during execution of processing by the service providing unit for providing the use reservation service, the first signal requesting the authentication information used for locking and unlocking the vehicle or the facilities;
• and
• receiving, by the first receiving unit, the authentication information from the server,
• wherein the server is managed by another organization different from an organization managing the other server.

A non-transitory storage medium storing a program, the program being installed in a portable terminal capable of communicating with a first server in which authentication information is stored and a second server which provides a use reservation service for a vehicle or facilities, the authentication information being used for locking or unlocking the vehicle or the facilities, wherein

• the program is configured to cause the portable terminal to:
• provide the use reservation service by communicating with the second server;
• and
• send a first signal to the first server, when a first operation is performed, the first operation relating to a reservation made by the use reservation service, the first signal requesting the first server to send the authentication information used for locking and unlocking the vehicle or the facilities to the portable terminal, and
• the server is managed by another organization different from an organization managing the other server.