Patent attributes
When a holder of a cellular telephone operates a specific-key, the cellular telephone composes an e-mail containing a location-name, location-information, positioning-accuracy and positioning-time and sends the e-mail to a mail-address registered in a location-notification-address-table. In addition, when the cellular telephone receives an e-mail from the address registered in the location-notification-address-table, the cellular telephone composes an e-mail containing a location-name, location-information, positioning-accuracy and positioning-time, and sends the composed mail to a sender of the received e-mail. Moreover, when a departure-notification-time registered in a notification-location-table has come, the cellular telephone executes positioning, discriminates whether or not the holder exists in the vicinity of the location-name corresponding to the departure-notification-time, and sends an e-mail to a mail-address registered in the location-notification-address-table to notify whether or not the holder has departed from the location.
