Giesecke & Devrient Gmbh

Sven Ehrich

Bernd Wunderer

Steffen Schmalz

Helmut Steidl

Franz Müller

Wolfgang Rapf

Helmut Karl Reinisch

Hermann Weilacher

Karl-Dieter Förster

Manfred Parussel

In an apparatus for testing value documents, such as for example bank notes, an area of the bank note is captured from different directions with the help of two optical sensors aligned symmetrically to each other. The measured values supplied by the sensors on the one hand are added up in order to obtain a total measured value which is insensitive to asymmetric effects of the value document, and on the other hand the measured values are subtracted in order to capture exactly these asymmetric effects. In this way with the help of one single apparatus there can be tested authenticity features as well as the quality of the actual state of the value document.

Method and device for testing valuable documents

A method for identifying suspected counterfeit and/or counterfeit banknotes paid into an automatic teller machine, wherein banknotes to be paid in are checked for authenticity on the basis of data from a sensor device. The identification is achieved by linking data from the sensor device concerning the suspected counterfeit and/or counterfeit banknotes to an identity of a payer. The method also includes storing the data concerning the suspected counterfeit and/or counterfeit banknotes and the identity of the payer, and generating checking data for the suspected counterfeit and/or counterfeit banknotes by means of the sensor device or a sensor device similar to the sensor device. The checking data are generated by the sensor device for one or more possible positions of the suspected counterfeit and/or counterfeit banknotes, comparing the checking data with the stored data concerning the suspected counterfeit and/or counterfeit banknotes and determining the data of the suspected counterfeit and/or counterfeit banknote which has the closest agreement with the respective checking data. The method further includes identifying the respective suspected counterfeit and/or counterfeit banknote by means of the identity of the payer, which is linked to the data concerning the suspected counterfeit and/or counterfeit banknote with the closest agreement.

Method for identifying counterfeit banknotes

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Reichertshausen, Germany

Sven Ehrich