Authentication by means of geometric security features
A method of authenticating value documents has the following steps: a) providing a document to be checked for authenticity, b) providing a high-frequency magnetic excitation field, c) providing a trajectory path for checking the document, d) providing a detection coil, e) the detection coil receivin...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | A method of authenticating value documents has the following steps: a) providing a document to be checked for authenticity, b) providing a high-frequency magnetic excitation field, c) providing a trajectory path for checking the document, d) providing a detection coil, e) the detection coil receiving a detection signal when the document follows the trajectory path, f) deriving geometric parameters from the detection signal, g) comparing the geometric parameters with the geometric parameters of a genuine value document. |
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