Computer-implemented method for copy protection, data processing device and computer program product

Computer-implemented method for preventing unauthorized processing of a digital representation of at least a portion of a test element, the test element deviating from an original security document as well as from a training document but being considered as an original security document, the method, comprising:

• a) providing at least a portion of a training document,
• b) recording an image file of the training document representing a digital representation of the at least one portion of the training document using an inspection device, wherein the inspection device provides a data file of the at least one portion of the training document having a resolution within a range of 50 dpi to 2000 dpi,
• c) identifying data representing a characterizing feature within the image file of the training document using artificial intelligence, wherein the image file is inspected by the artificial intelligence for identifying a set of peculiarities which represent criteria for assessing similarity with a test element, wherein the set of peculiarities of the characterizing feature is a feature when realized in the test element, can cause the test element to be considered as an original security document, wherein the feature which the test element is to be analyzed for does not rely on predetermined inputs,
• d) providing an image file of the test element, wherein the image file is based on the digital representation of at least a portion of the test element, wherein the test element deviates from the original security document and the training document,
• e) analyzing the image file of the test element using the artificial intelligence with regard to the set of peculiarities in the image file of the training document representing the characterizing feature of the at least one portion of the training document, which, when realized in the test element, can cause the test element to be considered an original security document, and determining the similarity of the image file of the test element and the characterizing feature,
• f) activating a prohibiting software or hardware implemented structure using the artificial intelligence if the image file of the test element is assessed similar to the image file representing the characterizing feature, wherein
• further processing of the image file of the test element is prohibited by the prohibiting software or hardware implemented structure, and/or wherein
• the image file of the test element is amended by the prohibiting software or hardware implemented structure such that the image file of the test element is prevented from being further processed,
• and
• wherein the method does not authenticate the image file of the test element with regard to the digital representation of the image file of the training document including the at least one portion of the training document.