公开(公告)号：US20190163980A1

公开(公告)日：2019-05-30

申请号：US16097652

申请日：2017-05-12

Applicant: 3M INNOVATIVE PROPERTIES COMPANY

Inventor： Justin M. JOHNSON ,  James W. HOWARD ,  James B. SNYDER ,  Kui CHEN-HO ,  Suman K. PATEL ,  Travis L. POTTS ,  Carla H. BARNES ,  Tadesse G. NIGATU

IPC: G06K9/00 ,  G08G1/017

Abstract: In some examples, an optically active article includes a retroreflective substrate; and at least one security element disposed at the retroreflective substrate; an article message disposed at the retroreflective substrate, and wherein the at least one security element comprises validation information that is detectable outside a visible light spectrum, and wherein a combination of the article message and the validation information of the at least one security element indicates whether the optically active article is counterfeit.