Patent ID: 6931538

Claim:
A portable personal authentication apparatus configured so as to be portable, the apparatus comprising: built-in communication means for wirelessly connecting to a public network; and reading means for reading at least one of a human's biological features, wherein personal authentication is performed on the basis of data read by the reading means as authentication data, the portable personal authentication apparatus is used for personal authentication in an electronic system which can be accessed by a user on the basis of personal authentication, a user who intends to use the electronic system is permitted to access the electronic system on the basis of the authentication data read, the electronic system is a notifying system for giving urgent notification to a competent center in the case of an emergency having occurred, the portable personal authentication apparatus is used at least for notification of cancel given in the case of canceling the urgent notification, and authentication data read by the portable personal authentication apparatus is sent to the competent center by the communication means in the case of giving the notification of cancel.