| 摘要 |
PURPOSE:To provide a hologram card that cannot be easily forged by using transparent holograms as holograms provided on a card base, with machine readable information recorded. CONSTITUTION:Holograms 10-30 are provided in the array positions based on card intrinsic information recorded on a card base 1, and transparent holograms are used as the holograms 10-30. Since the holograms do not reveal the reproduced images of the recorded intrinsic information by white light, a hologram card looks like only a card simply provided with a metallic thin film or a plastic film. Irradiated by laser parallel beams or the like, however, the card intrinsic information can be react, and the authenticity of the card can be judged. Accordingly, the recorded information cannot be easily read by simple light source, and rewriting is also impossible so as to have extremely high forgery preventiveness. |
