Long-term storage, update, and browsing management of personal data and family tree data, and personal data and family tree data can be browsed by the successor, and long-term storage management of personal property of the contractee or contractor And be able to manage browsing. By the information management server system (10), long-term personal data indicating the personal history of the contractee (301) or the contractor (300) and a plurality of information related to the contractee (301) or the contractor 300 Storage, renewal and browsing management, long-term storage and browsing management of the contractee (301) individual or contractor (300) personal property, and a plurality of client-side terminals (via the Internet (40)) 30), by using the authentication information registered in the ID card (31) authenticated by the certification authority side terminal (20), access to the information management server system (10), browsing of content information, and personal data To update.
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