The present invention relates to a document with anti-counterfeiting means to prevent reproducibility by photocopying.
It is known that photocopying machines capable of reproducing any document in the finest of details are currently commercially available. These machines have already been used for the fraudulent duplication of documents, such as for example checks and the like, obtaining a photocopy that is substantially identical to the original and cannot therefore be distinguished easily.
In order to solve this problem, various methods have already been marketed which, for example, produce on the document regions that are not visible within the normal spectrum of visible light but instead appear in the photocopy, thus making the counterfeiting evident.
However, these methods entail considerable complexity during production of the document and accordingly so far they have not been widely adopted.