Anti-counterfeiting Technique for Molded Resin Articles

Counterfeit molded resin products are being sold to customers alongside the manufacturer's genuine products. This paper proposes an anti-counterfeiting and authenticity verification technique (called artifact metrics) for molded resin products. In this technique, random marble-like pattern is added to the products but it is concealed by infrared-transmitting black paint. In our experiment, we confirmed that (1) the marble-like patterns (characteristic information) could not be observed by the naked eye; (2) characteristic information could be extracted from samples covered by the above paint; and (3) the characteristic information extracted by the infrared camera differed for each sample.