Patent ID: 8652592

Claim:
A discrimination medium comprising: a cholesteric liquid crystal layer having a circular polarization light selectivity of reflecting predetermined circularly polarized light and having a surface; a breakable print recording layer comprising one or more of a metal and an alloy provided at least at a portion of at least the surface of the cholesteric liquid crystal layer; and the breakable print recording layer having a printed layer provided thereover, wherein a portion of the breakable print recording layer and the printed layer is removed from the discrimination medium, one or more portions of the cholesteric liquid crystal layer are exposed, and the exposed one or more portions of the cholesteric liquid crystal layer are viewable in a specific color via an optical filter allowing a predetermined circularly polarized light to selectively pass therethrough, wherein the printed layer has substantially the same color as the color of the cholesteric liquid crystal layer when the cholesteric liquid crystal layer is viewed from a predetermined direction, wherein the exposed one or more portions of the cholesteric liquid crystal layer are not viewed from the predetermined direction via an optical filter allowing a circularly polarized light selectively reflected from the cholesteric liquid crystal layer to selectively pass therethrough, and the exposed one or more portions of the cholesteric liquid crystal layer are viewed from the predetermined direction via an optical filter allowing a circularly polarized light having a circular polarization direction opposite to a circular polarization direction of the circularly polarized light selectively reflected from the cholesteric liquid crystal layer to selectively pass therethrough, and wherein a barcode pattern is formed by using the exposed one or more portions of the cholesteric liquid crystal layer, and at least a portion of the cholesteric liquid crystal layer is subjected to hologram working or embossing.