| 摘要 |
In order to invalidate falsified or misappropriated credit cards, the mistakes in agreement between the confidential code composed by the bearer and the number of the card, and the agreements between the number of the card and a number which is present on a list of rejects are detected. In the event of detection, a second read passage of the card 10 is brought about in the course of which at least one of the magnetic tracks ISO2, T2 is destroyed by an erase head 24 below. <IMAGE>
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