FIELD: protective elements.
SUBSTANCE: protective element has base, onto which first cover of magnetic material forming first code is applied and second cover of electro-conductive material forming second code, and also provided with third, optically readable code, which are least at local portions is formed by third cover of non-magnetic and non electro-conductive material, which cover separate portions of protective element not covered by first and/or second cover. All three of aforementioned covers indistinguishable from one another by the unaided eye. Proposed invention also concerns document, banknote, protected from forgery, and also method for manufacturing protective element.
EFFECT: creation of protective element, all protective signs of which can not be seen without special equipment and which can be simple and inexpensive to make, and also allows highly reliable authenticity check.
5 cl, 6 dwg
