A self-authenticating article comprising a substrate having an image
receiving surface and a lenticular lens is provided. The lenticular lens
has a predetermined lens frequency and is configured for optically
decoding encoded indicia viewed therethrough. The lens is attached to the
substrate so that the lens can be selectively positioned to overlie the
image receiving surface to decode encoded indicia printed thereon. The
self-authenticating article further comprises an encoded image on the
image receiving surface, the encoded image comprising at least one of the
set consisting of printed indicia and indicia formed as variations in
surface geometry of the image receiving surface. The surface geometry
variations may comprise raised and non-raised areas surface areas that
combine to define at least a portion of the indicia.