Patent ID: 8596526

Claim:
A method of analyzing mixtures of materials used as a unique identifier, the method comprising: generating a mixture of one or more components; applying the mixture on an object directly or as part of the object, or on the surface of the object, or on a label on the object, or on a label on the primary or secondary packaging containing the object; and measuring a spectral emission and/or reflection and/or absorption obtained from the object resulting from more than one form of stimulation using an apparatus capable of producing more than one form of radiation, data corresponding to the measurement indicating the presence or not of the one or more of the possible components of the mixture to determine the unique identifier, wherein the step of measuring spectral emission and/or reflection and/or absorption obtained from the object resulting from the forms of stimulation is selected from a group consisting of: visible absorption, IR absorption, anti-stokes emissions, emissions with long wave UV stimulation, emissions with short wave UV stimulation, emissions from phosphorescent materials under long wave UV with slow phosphorescent decay rate, emissions from phosphorescent materials under long wave UV with medium phosphorescent decay rate, emissions from phosphorescent materials under long wave UV fast phosphorescent decay rate, emissions from phosphorescent materials under short wave UV with slow phosphorescent decay rate, emissions from phosphorescent materials under short wave UV with medium phosphorescent decay rate, emissions from phosphorescent materials under short wave UV with fast phosphorescent decay rate, Raman spectroscopy or combinations thereof.