Patent ID: 9747473
Date: 2017-08-29
CPC Classifications: G06K

Claim:
1. Marking comprising on a surface: a first pattern for coding a first numerical information item on said surface, the first pattern comprising a specific arrangement of a plurality of symbols belonging to a set of symbols, each symbol in the arrangement being intended for the coding of a portion of said numerical information item, each symbol including at least one differential pair of elements positioned in a specific way, each element having a parameter, the parameter of a first element of each differential pair having a first value and the parameter of a second element of each differential pair having a second value different from the first value and a difference between said first value and said second value cannot be detected by the naked eye, a second pattern for coding a second numerical information item on said surface, said second pattern being a one-dimensional barcode or a two-dimensional barcode, wherein the first pattern, including each element thereof, and second pattern are adapted to be read under corresponding distinct first and second reading conditions, and the first pattern is embedded either in at least one black portion of the barcode or in at least one white portion of the barcode.