Relay device, storage medium storing program for relay device, and control method of relay device

A relay device for use in a system that enables a person who possesses a portable device in which enablement data as data that permits operation of a vehicle is stored, to operate the vehicle, the relay device being adapted to relay the enablement data from a center server that issues the enablement data of the vehicle, to a portable device of a person who is scheduled to operate the vehicle, the relay device comprising:

• a processor coupled to a memory and configured to:
• obtain the enablement data of the vehicle from the center server;
• temporarily store the enablement data obtained, in a storage device;
• send the enablement data stored in the storage device, to a portable device used by a person in charge of operation of the vehicle;
• and
• delete the enablement data stored in the storage device, after transmission of the enablement data to the portable device used by the person in charge is completed, the enablement data stored in the storage device being deleted after transmission of the enablement data to the portable device used by the person in charge is completed and the operation of the vehicle by the person in charge is confirmed:
• and
• receive a notification indicating that the person in charge has started the operation of the vehicle or the person in charge has finished the operation of the vehicle, from the portable device used by the person in charge, wherein the processor is configured to delete the enablement data stored in the storage device in response to receipt of the notification.