| abstract |
A method is disclosed to verify and identify products through their product signatures in order to combat counterfeiting and reduce dispensing errors, using methods such as spectral analysis (e.g., near infrared spectroscopy). Furthermore, in order to actively evade product counterfeiting, a method is disclosed where an amount of one or more components of the product are varied (e.g., over time); the variation provides a different product signature, but falling within a desirable or necessary range. |