A method of identifying a source of a Substance incorporating one or more luminescent markers comprises illuminating the Substance to stimulate emission from at least one of the luminescent markers. A luminescent signature is generated from the detected luminescent emission. The source of the substance is identified based on a match between the generated luminescent signature and a pre-defined luminescent signature.
|Patent number||US 7,800,088 B2|
|Publication status||Published - 21 Sep 2010|