METHOD OF PRODUCT AUTHENTIFICATION

摘要

A label (1) is applied to a product. The label (1) includes two windows (7a) and (7b) allowing a portion of the product beneath the label to be scanned with a laser. The windows (7a) and (7b) have a gap between them which is truncated. By reading the distance across the gap and the height across the gap a laser can be accurately and repeatedly aligned along the windows. A scan is taken at a point of origin for the product along the line of the windows. At a subsequent time and life of the product the scan is repeated and the repeated scan is compared to that taken at the factory to determine the authenticity of the product. The label also includes indicators (3) that locate the stored scan.