| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a constitution capable of effectively preventing abuse by duplication, without deteriorating reading accuracy of an information code, in a system for controlling an electric lock based on a collation result of the information code, by reading the information code displayed on a display unit of a portable terminal.SOLUTION: On the portable terminal 10 side, an information code of recording authentication information is divided into a plurality of divided information codes to be displayed on a display device 13, and on the reader 20 side, the plurality of these divided information codes are synthesized, and the electric lock is put in an unlocked state based on a result of reading the synthesized information codes. Thus, since the electric lock cannot be unlocked by a divided information code single body, the abuse by the duplication can be effectively prevented. Since there is no need to impart a special function to the divided information code displayed on the display device 13, deterioration in the reading accuracy of the information code can also be suppressed.</p> |
