| 摘要 |
A product authenticator includes a substrate adapted to be associated with a product. A mark is on the substrate and includes an intaglio print and a multi-channel hologram. The intaglio print has a primary image visible from a first range of viewing angles and a latent image visible from a second range of viewing angles different than the first range of viewing angles. The multi-channel hologram has a first channel image visible from the first range of viewing angles and a second channel image visible from the second range of viewing angles. The latent image and the second channel image are related to one another so as to provide, when viewed together from within the second range of viewing angles, an indication of authentication. |
