Patent ID: 9594993
Date: 2017-03-14
CPC Classifications: G06K,H04W

Claim:
1. A method of authenticating 2D barcode on a product including the 2D-barcode, the 2D-barcode including a primary information pattern representing primary information readable by a 2D barcode-reader and a visible pattern representing secondary information made difficult to reproduce without alteration, the visible pattern being embedded within the 2D-barcode in at least one area that does not contain any primary information and including light and dark elementary sub-cells smaller than 50 μm, the method comprising reading with the 2D barcode-reader said 2D-barcode; identifying said visible pattern and identifying within said secondary information a secret, thereby forming a detected secret; comparing said detected secret to a secret key of a source 2D-barcode and determining, as a result of the comparing, a secret similarity score; comparing said secret similarity score to a secret threshold; and establishing an authentication secret result as successful if said result is equal to or more than said secret threshold, or being failure if said result is less than said secret threshold.