can be stacked one on top of the other in the same printed area - thereby defeating even the most determined forgers. One outstanding security advantage of HALO is that multiple security images/words etc. The HALO security features can be authenticated using a proprietary lens. It is a patented covert security feature such that computers, scanners, photocopiers and printers cannot duplicate the hidden security feature. HALO belongs in our family of authentication technologies.
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