| 摘要 |
PURPOSE:To prevent the trouble due to a malicious forged time card by sending a warning to the user using a forged time card when using the time recorder so as to make him use the proper time card. CONSTITUTION:A bar code X for integrated distribution including at least the maker code and the merchandise code in a time card TC is printed. In a time recorder 1 to which the time card TC is inserted, a bar code reader 19 reading the bar code X printed on the inserted time card TC, code discrimination means for discriminating whether or not the read bar code X is a specified one, sounding device 21 outputting the warning sound when the bar code X is not the specified one, and display device 2 displaying the warning message are provided. |
