The presentation gives an overview of the current methods to mark AM products for tracing and identification, both overt and covert. It draws on the substantial pre-AM experience gained by manufacturers and converters in using tracers to fight counterfeiting and diversion. It argues the importance of introducing covert protection that escapes the attention of counterfeiters and erects formidable obstacles in the way to illegal reproduction, a multilayer security approach being the industry best known practice. Case studies in security paper and polymer production are discussed as well as those in various printing methods of documents and packaging, particularly in inkjet as a close relative to some of AM deposition techniques. The presentation highlights the role of luminescent ceramics in security marking. Relying on the mechanism of optical response, the ceramic tracers must overcome fundamental challenges in situations where optical transmission is inhibited to be successfully implemented in a variety of AM applications.
- Realize the importance of implementing security features to combat counterfeiting
- Understand the current technologies available for securing AM parts
- Come up with an action plan to evaluate various security technologies