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seen that kenna again ektheten in a informationsberare and device for implementation of the set
seen that kenna again ektheten in a informationsberare and device for implementation of the set
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机译:看到肯纳(Kenna)再次在信息保护装置和实施该装置的装置中
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摘要
The present invention specifies a method for the verification of authenticity in a data carrier (1) by measuring permeability to an electromagnetic radiation in at least one region of the data carrier (1). Permeability is scanned over a regional area of the data carrier by means of a radiation detector (7) first in a calibration operation, in which the radiation intensity is adjusted, then in a reading operation at another position of the data carrier. The output signal of the detector (7) is coded and co-inscribed as additional information in a store of the data carrier with the information data during the initial inscribing of these data. In the reading and authenticity check scanning operation this information is compared with a corresponding additional information stored during the original data inscription.
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