Patent ID: 9734442
Date: 2017-08-15
CPC Classifications: G06K

Claim:
1. A method for creating a barcode, comprising: concatenating data fields of binary bits to be represented in the barcode; partitioning the concatenated data into n-bit segments to establish formatted data; encoding the formatted data by assigning a respective code to each n-bit segment; and creating the barcode using the encoded data and including within the barcode an expandable format field that includes a format code that indicates a format for the encoded data and including within the barcode the format code within a first bit segment of the barcode, wherein creating the barcode includes creating a covert portion in the barcode and an overt portion in the barcode, wherein the covert portion is invisible to an eye and includes a color that matches a substrate color of a substrate to which the barcode is to be applied, and wherein creating further includes printing the covert portion onto the substrate as a photoluminescent material that is printed on the substrate proximate to the overt portion.