Delivery system and its delivery method

A delivery method performed by a delivery system comprising:

• at least one storage box capable of storing a delivery item;
• a plurality of receiver terminals used by receivers of the delivery item;
• a deliverer terminal used by a deliverer of the delivery item;
• and
• a server capable of communicating with each of the receiver terminals and the deliverer terminal, the delivery method comprising:
• transmitting, by the deliverer terminal to the server, identification information of the storage box storing the delivery item and identification information of a destination receiver of the delivery item,
• transmitting by the server, based on the identification information of the destination receiver of the delivery item transmitted from the deliverer terminal, delivery information notifying the receiver terminal of the destination receiver that the delivery item has been or will be delivered in the storage box;
• displaying by the receiver terminal of the destination receiver, predetermined specific information or group information on a screen in a selectable manner based on relevant information, wherein the predetermined specific information is one of a room number and a department name of an alternate receiver;
• displaying by the receiver terminal of the destination receiver, the predetermined specific information without displaying a name of the alternate receiver;
• transmitting, by the receiver terminal of the destination receiver to the server, information of an alternate receiver set based on the relevant information about a person who is in a building with the destination receiver and is related to the receiver;
• and
• transmitting, by the server to the receiver terminal of the alternate receiver, the identification information of the storage box and unlocking key information for unlocking the storage box, based on the information of the alternate receiver transmitted from the receiver terminal of the destination receiver, and
• reading, by the storage box, the unlocking key information from the receiver terminal of the alternate receiver and physically unlocking the storage box based on the unlocking key information;
• wherein
• the server sets information of at least one alternate receiver based on the relevant information and transmits the set information of the alternate receive together with the delivery information to the receiver terminal of the destination receiver,
• the receiver terminal of the destination receiver transmits, to the server, the information of the at least one alternate receiver selected based on the information of the alternate receiver transmitted from the server, and
• the server transmits the identification information of the storage box and the unlocking key information for unlocking the storage box to the receiver terminal of the alternate receiver based on the information of the alternate receiver transmitted from the receiver terminal of the destination receiver.