Joel Zlotnick | Physical Scientist
US Department of State | United States

Joel Zlotnick, Physical Scientist, US Department of State

Joel Zlotnick is employed by the U.S. Department of State, Bureau of Consular Affairs, Counterfeit Deterrence Laboratory as a supervisory physical scientist.  His current work involves research in security artwork and design techniques for maximizing counterfeit deterrence and facilitating counterfeit detection.  He is an instructor on security documents and counterfeit detection at the U.S. Foreign Service Institute, and develops training courses on counterfeit detection topics such as security feature authentication, fraud techniques and printing process identification.  In a previous position at the U.S. Homeland Security Investigations Forensic Laboratory (HSI-FL), Mr. Zlotnick performed forensic examinations in the areas of questioned documents, ink comparison, counterfeit link analysis and audio/video enhancement, and authored many counterfeit deterrence evaluations.  He was also previously employed by the U.S. Secret Service, where his duties included counterfeit document examination and link analysis, adversarial analysis and counterfeit detection training.  Mr. Zlotnick holds a B.S. in chemistry and M.S.F.S. in forensic science.


Identity Week London 2020 - Day 3 @ 15:00

Security fibers: substrate feature or image feature?

Security fibers and planchettes are among the oldest anti-counterfeiting technologies and remain popular today for securing paper substrates.In genuine documents security fibers are almost exclusively regarded as a substrate feature, though a few outlier genuine documents do feature printed fiber or planchette patterns as a proxy for actual physical security fibers.However, counterfeiters need not, and often do not, obey the conventions of genuine document manufacture.Because visible and UV-responsive colors are often the most important descriptors of both physical and printed security fibers, counterfeiters can and do choose to interpret physical security fibers as part of the document artwork, instead of as part of its substrate.When security fibers are viewed as artwork, concepts normally associated with printed images (registration and contrast, for example) can be applied in the context of security fiber design, with consequences for security fiber resistance to both traditional and digital counterfeiting workflows.
last published: 05/Mar/20 10:45 GMT
last published: 05/Mar/20 10:45 GMT
last published: 05/Mar/20 10:45 GMT

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