Forgery prevention medium

摘要

A forgery prevention medium includes a volume hologram layer 2 on which an interference pattern is recorded after being exposed to an emitted laser beam; a digital watermarking information layer (22) that can be interpreted by emitting a light beam with a predetermined wavelength; and an adherend (41) that has the digital watermarking information layer and is attached to the volume hologram layer, wherein the information layer is of a different color from the volume hologram layer.