| 摘要 |
<p>To impede the counterfeiting of a valuable instrument (100a) (e.g., a cash card, negotiable instrument or any document), an issuance mark (1a) is formed on the instrument at a programmed distance (d) from a reference mark (111) located on the instrument (100a). The information pertaining to the distance (d) is encoded and written onto a storage medium (122) located in the instrument (100a). In a particular system embodying the invention, a card vending machine (95a) is programmed to encode cards with various parameters, such as the distance (d) between the reference (111) and issuance marks (1a), by writing the parametric information into an information storage medium (122) located in the card. As a corollary, in a particular system embodying the invention, a dispensing machine (95a) is programmed to read the information stored in the information storage medium (122) and the parametric information present in the card (100a) and to then compare the stored information with the values of the actual parameters present in the card.</p> |
