摘要 |
This publication discloses a method for identifying items, such as sheets of paper, or packages, a resistance mark arrangement, and reading apparatus. According to the method a mark made of electrically conductive material on the item is read contactlessly, in order to identify the item ( 7 ), or determine its properties. According to the invention, the precise absolute or relative resistance value of at least one electrically conductive mark ( 6 ) is determined and the measured resistance value is converted, for example, with the aid of a coding table or calculation formula, into information depicting the identity or properties of the item.
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