Patent ID: 7930217

Claim:
A joint subscriber management system that acts as a surrogate in performing a registration activity for enabling a receiver to receive a broadcast and/or in performing an electronic commerce transaction comprising: reception means for receiving a reception-limiting identification number of the receiver for receiving a specific broadcast, a broadcaster identification number of at least one broadcaster of a plurality of broadcasters, and registrant information concerning registration of a user allocated to the reception-limiting identification number; generation means for generating a joint management identification number, the joint management identification number being generated in correspondence with information on a user owning the receiver and the reception-limiting identification number received by the reception means; recording means for recording the reception-limiting identification number, the joint management identification number, and the registrant information in a registrant information table in correspondence with one another; and management/operation means for acting as a surrogate in performing member management and the electronic commerce transaction in accordance with the recorded registrant information table storage means for storing the received registrant information.