| 摘要 |
PROBLEM TO BE SOLVED: To prevent the forgery of a magnetic card by printing resistance, etc., at a part in the hole of the magnetic card and destroying printed resistance, etc., by means of opening the hole. SOLUTION: A system is constituted of resistance, etc., (1) printed on the magnetic card, the contact part (2) of a machine with the magnetic card and a conductive body (3) connecting printed resistance, etc., to the contact part (2). In the configuration, the money amount part of the magnetic card by magnetism is converted into a resistance value and the resistance value is set to be changed for the portion of change when the money amount is changed by magnetism in the machine. The resistance value at this time is permitted to coincide with theresistance value between the contact parts A and B of the magnetic card contact part (2). When the remaining money amount is reduced in the magnetic card by using the magnetic card, the resistance, etc., of the magnetic card being equivalent to reduction is successively destroyed. Thus, the whole resistance, etc., of the magnetic card is destroyed when the whole money amount is used. |
