Patent ID: 8489508

Claim:
A gateway server device configured to communicate via network with a user terminal, a first service server, a second service server, a management server, and a gift delivery server, the gateway server device comprising: at least one processor; at least one memory; a first receiving section configured to receive a first identification tag identifying a first user from the first service server; a second receiving section configured to receive, from the second service server, one or more identification tags of one or more other users associated with the first user identified by the first identification tag received by the first receiving section; a third receiving section configured to receive a command from the user terminal for selecting an identification tag as a second identification tag from the one or more identification tags of one or more other users, which are received by the second receiving section, wherein the user terminal being operated by the first user identified by the first identification tag; a fourth receiving section configured to receive from the second service server an encryption key associated with the second identification tag; and a fifth receiving section configured to receive from the management server encrypted address information of a second user identified by the second identification tag; a decryption section configured to decrypt the encrypted address information using the encryption key received by the fourth receiving section; a first sending section configured to send decrypted address information to the gift delivery server.