FIELD: printing.
SUBSTANCE: invention relates to production of a security feature on a flat substrate. The particles forming cryptographic random pattern are applied to the substrate. On the substrate on the label site corresponding to the security feature and pretreated with the adhesive, flexible pieces of metal wire, such as copper wire, are poured, at that the pretreatment with adhesive is carried out by local application limited by the label site.
EFFECT: proposed invention provides creation of the simple and inexpensive security feature, easily detected and accurately processed by cryptographic method.
7 cl, 7 dwg
