| 摘要 |
Disclosed are a portable information terminal for materializing limitation of its use more effectively and method and program for controlling the terminal The portable information terminal comprises a mail address storing unit for storing mail addresses, a mail reception unit for receiving mails, a certification information generation unit for generating certification information and a terminal lock controlling unit for limiting a predetermined function or operation, wherein when a mail address of an originator of transmission of a mail received by the mail reception unit coincides with an address stored in the mail address storing unit, the predetermined function or operation is limited by certification information the certification information generating unit generates.
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