FIELD: protective system for checking authenticity of valuable documents.
SUBSTANCE: protective system in case of falling light can reconstruct a pattern outside the plane of carrier in holographic way, which pattern contains concealed information. System contains surface, at least partially transparent verification element, which in case of surface contact with protective element allows reading of information stored in it.
EFFECT: higher level of protection from forgery, increased reliability of authenticity check.
9 cl, 8 dwg
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