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. A first insulating layer is formed over the wafer. In addition, these systems and methods include an o-ring preventing surrounding the first layer and a housing encasing the first layer and the o-ring.