| 摘要 |
<p>PURPOSE:To prevent the duplication of magnetic recording data by visually displaying card discrimination data showing a magnetic card becoming the use object of a system to the upper surface of the magnetic recording part in which data is written in the magnetic card by a bar code. CONSTITUTION:An area 13 displaying an exactly calculated amount and an exactly calculated state is provided to the surface of a magnetic card 9. A magnetic stripe 15 is provided to the rear of the magnetic card 9 and a code Cd is recorded. Card discrimination data showing the magnetic card becoming the use object of an automatic vending machine 1 is printed on the surface of the magnetic card 9 by a bar code so as to cross the magnetic stripe 15. When the data of the bar code read by an optical reader 36 coincides with the card discrimination data of an ROM, the data of the magnetic stripe 15 is read and erased to perform re-writing. When there is no bar code at the part corresponding to the magnetic stripe 15 of the magnetic card 9, said card 9 is judged to be a forgery card and a punch hole is opened to a trouble mark 14 by a punch mechanism 41 and the magnetic card is discharged from a card insert port 10.</p> |
