INFORMATION MAINTENANCE SYSTEM AND INFORMATION MAINTENANCE METHOD

摘要

PROBLEM TO BE SOLVED: To provide an information maintenance system that can easily restore user information for a mobile phone or a PHS when the mobile phone or the PHS is defective, lost or stolen or the model of the mobile phone or the PHS is changed. SOLUTION: Manual or automatic backup or mirroring of contents of a storage means 101 of a mobile phone 100 is applied to a storage medium 201 provided to a fixed storage device 200 such as a TV, a PC or a router. Backup or mirroring is applied to devices of backup or mirroring objects connected via a network after authentication between the devices with each other so as to prevent backups from taking place in order to avoid the backup or mirroring method from being illegally utilized.