| 摘要 |
In a remote monitoring system, when a guardian inputs predetermined authentication data to a master terminal in order to make a request for authentication of the master terminal, the authentication data is transmitted to a firm server via a base station and a cellular phone network. The firm server 15 compares the authentication data with reference data in a registration data file for authentication of the master terminal to execute authentication decision. When the guardian operates keys of a slave operation section 31 to operate the slave terminal remotely from the master terminal, a command signal for causing the slave terminal to perform a desired operation is transmitted form the master terminal to company facilities and temporarily held therein.
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