A digitally designed image, often employing diffractive or interference patterns, intended for reproduction using standard printing methods is fundamental to anti-counterfeiting measures. These images, when applied to documents or products, can display three-dimensional or dynamic visual effects when viewed under appropriate lighting conditions. One example is a label affixed to a product carton which exhibits a color shift or motion effect as the viewing angle changes, providing immediate visual verification of authenticity.
The significance lies in providing a cost-effective and easily deployable method for protecting against forgery and product diversion. Historically, complex and expensive holographic origination was required for security features. This approach democratizes access to sophisticated security technologies, allowing smaller businesses and organizations to implement brand protection measures. The benefits extend beyond product authentication to include document security, such as preventing the unauthorized reproduction of identification cards or certificates.
The following sections will detail various techniques, materials, and applications related to producing these visual authentication devices, exploring both overt and covert security features, and evaluating the effectiveness of different printing methodologies.
