A security article includes a light transmissive substrate having a first surface
and an opposing second surface, with the first surface having an embossed region
with an optical diffraction pattern or a holographic image pattern. A color shifting
optical coating is formed on the substrate such as on the opposing second surface,
with the optical coating providing an observable color shift as the angle of incident
light or viewing angle changes. The security article can be used in a variety of
applications and products to provide for enhanced security measures such as anticounterfeiting.