| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an identifying device which is low-cost and has high reliability. SOLUTION: First and second user portable devices 10a and 20b provided to user portable equipments 40a and 50a that a user can carry and a user device 30a provided to a user device (card and portable telephone set) 60a that the use uses are used. One piece of information (original information) is divided on the whole to obtain 1st information (1), 2nd information (2), and 3rd information (3). The user portable device 10a holds the 1st information (1), the user portable device 20a holds the 2nd information (2), and the user device 30a holds the 3rd information (3). The user device 30a combines received information and the 3rd information (3) that the device itself has together by algorithm for processing. When the original information can be generated by combining the received information and the 3rd information (3) together, it is confirmed that the user is the original user of the user device 60a and the user is allowed to use the user device 60a.</p> |
