Patent ID: 8517274
Filing Date: 2013-08-27
Classification: B65D,G01J,G01N

Abstract:
1. A method comprising: selecting an identifier indicative of a binary number comprising at least six bits; for each bit of the at least six bits of the binary number, determining whether the bit is a “one” or a “zero”; for each bit of the at least six bits that is a “one”, providing a respective taggant having a respective spectroscopic activity, whereby said taggant is associated with a respective bit position within the at least six bits; for the provided taggants, joining them to an authentication material; and placing the authentication material upon a package; wherein the authentication material is a sheet, and the package contains a consumer product, and the joining step comprises laminating the sheet to a face of the package; wherein the package is a flexible heat-sealed bag and the consumer product is an edible or drinkable or consumable product within the bag; and wherein at least one taggant changes if exposed to a predetermined temperature such that the spectral properties of the taggant chemical are measurably altered.