Patent ID: 7158805

Claim:
A system for exchanging and automatically updating changes in terminal-stored information among users having a telecommunications terminal apparatus, the system comprising: a plurality of user telecommunications terminal apparatus each comprising: a user memory unit having at least personal information and detailed personal information stored therein concerning a terminal user and one or more other parties having a telecommunications terminal apparatus, key information indicative of a preassigned level of accessibility associated with terminal-stored information, and a list of other parties that have exchanged information with said terminal user; and a control unit for: controlling a forwarding of changes made to a terminal user's stored information or key information to other telecommunications terminals included in the list of other parties whenever said changes are input by said user, and storing an other party's terminal stored information and key information in the user memory unit whenever that information is received; from said other party and a telecommunications subscriber system comprising one or more system subscriber memory units for storing a plurality of user's terminal stored information and key information corresponding to a plurality of subscriber telecommunications terminals, and a subscriber system control unit for: controlling storage of changed user terminal stored information and key information received from one of the plurality of subscriber telecommunications terminals based for storage in one or more subscriber system memory units based on a corresponding subscribing user's key information, and sending the changed information to all terminal apparatus of said other parties; wherein the system for exchanging and automatically updating changes in terminal stored information among users further comprises: one or more other subscriber systems; a plurality of registered user telecommunications terminal apparatus belonging to a subscriber system; and a data exchange management system for: receiving changed terminal stored information, and key information from one or more registered telecommunications terminal apparatus, and sending changed information to other registered telecommunications terminal apparatus in one or more subscriber systems based on said key information of a corresponding registered terminal apparatus from which the changed information is received.