Employing security inks and coatings

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There are a wide range of ink and coating solutions to help secure products against counterfeit attacks, alteration, and to authenticate branded products on the shelf, in the warehouse, or in a forensic laboratory. Such systems may be for covert (concealed) authentication or overt (primary) validation. 

OVERT OR PRIMARY VALIDATION
Overt or primary validation inks (see Figure 10.1) are designed to supply an initial indication of provenance that may be obtained visually within a few seconds.