Patent ID: 9747483
Date: 2017-08-29
CPC Classifications: B42D,G06K

Claim:
1. A secure document system comprising: a substrate; a first fluorescent barcode printed within a specific area of the substrate, the first barcode configured to emit a light of a first color when irradiated by an ultraviolet or infrared light; and a second fluorescent barcode printed within the specific area of the substrate, the second fluorescent barcode configured to emit a light of a second color, different from the first color, when irradiated by an ultraviolet or infrared light, the first and second barcodes emitting light simultaneously when irradiated by the ultraviolet or infrared light, the simultaneous emitting of the first and second fluorescent barcodes preventing scanning of the first barcode; whereby a filter configured for filtering out the second color of the second fluorescent barcode is required to read the first fluorescent barcode.