OVD (optically variable device) is the name given to iridescent security elements that exhibit various optical effects such as movement or color changes. It is often true that only the use of optically variable security features can provide effective protection against counterfeiting and misuse. OVDs are based on diffractive optical structures. This gives cards the appearance of having different patterns, colors, and designs depending on the amount of illumination and the viewing angle. The complexity of these designs and their widespread use make them very effective in deterring counterfeiters.
KURZ security products are available both as customized solutions to specific requirements and as part of a standard package of products. They come in a variety of patterns and designs that fulfill their function reliably, attractively, and cost-effectively.
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