| 摘要 |
PROBLEM TO BE SOLVED: To provide a network system capable of improving the security of information and shortening time required for the registration of a user. SOLUTION: A host device 2 in a center having received a registration request from a user (terminal device 3) through a videotex(VTX) network 1 registers the user based on a caller's number informed from the VTX network 1. In the case of utilizing information for the user, the caller's number used at the time of registration is compared with the caller's number of the user requesting the use of the information, and when both the numbers are mutually different, the use of the information is inhibited. |
