System for authenticating an item

摘要

A system of authenticating an item with a security mark includes a substrate (100); wherein the security mark is printed on the substrate with invisible ultraviolet (UV) absorbing ink (102); a coating comprised of UV fluorescent varnish (104) applied over the security mark and substrate; wherein an area comprising the security mark and coating with is illuminated with UV light; wherein a reduced fluorescence image of the security mark is identified; wherein the reduced fluorescence image is compared with the security mark; and wherein the item is authenticated if the reduced fluorescence image matches the security mark.

主权项

1. A system of authenticating an item with a security mark comprising:
a substrate; wherein the security mark is printed on the substrate and comprises invisible ultraviolet (UV) absorbing ink; a coating comprised of a clear UV fluorescent varnish applied over the security mark and substrate; a UV illuminator for illuminating the security mark and coating wherein the security mark emits a reduced fluorescence image of the security mark in the presence of UV light; an image sensor for capturing the reduced fluorescence image; a microprocessor for comparing the reduced fluorescence image of the security mark to a predetermined image and authenticating the reduced fluorescence image if it matches the predetermined image.