ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,468,914, issued on Nov. 11.
"Method and device for securing a document and method and device for authenticating a document, document secured using such a method" was invented by Zbigniew Sagan (Rueil-Malmaison, France) and Jean-Pierre Massicot (Rueil-Malmaison, France).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method (30) for securing a document, which comprises: a step (301) of statistically determining the average magnitude of an unpredictable print variation; a step (302) of generating a message representative of at least one predefined print variation rate; a step (307) of encoding the message in a 2D barcode comprising a plurality of cells, t...