The task of establishing the authenticity of document details, primarily signatures and handwritten notes by their executor, becomes relevant in connection with the development of copying and reproduction equipment and printing devices associated with software and computer tools that allow editing original images or copying and change the content of records made on behalf of other persons and pass them off as genuine.
Traditional methods of forging a technical signature are becoming increasingly obsolete, and there is a growing need for the development of new methods and technologies for protection against forgery.
One such technology is the reproduction of signatures using reproductions, which are produced using a plotter that uses a ballpoint pen as a printing device.
This technology makes it possible to reproduce signatures with high accuracy and quality and to convey small signs of any handwritten object, which, in turn, makes it extremely difficult for an expert to establish the fact and method of its technical imitation. In connection with the use of modern techniques for reproducing handwritten objects, publications on this topic began to appear in the scientific literature, but these works are clearly not enough.
This fact arouses interest in a deeper study of the problems of using new technologies for the forgery of documents, including from experts who conduct forensic examinations in this field and need scientific development of methods of performing handwriting objects using new technical means.
The result of the presented review was practical recommendations that allow us to discover a new technique of reproduction of signatures, namely, the technology of reproduction of a signature with the help of reproduction, which is carried out with the help of a plotter. The developed recommendations can be used by forensic experts in the field of technical forensic examination of documents and will prevent possible expert errors.
Key words: signature, technical and forensic investigation of documents, signs of technical signature forgery, plotter, forensic examination, methodical recommendations.