Abstract

Numerous explainable phenomena occur in handwriting that give the product the illusion of being a tracing. This paper exposes various illusions of tracing by describing specific case studies that include diffusion of ink components viewed under infrared luminescence, “sister” lines, rough writing surfaces, writing machines, and plastic lamination. Also discussed is a common principle that exposes illusions.

Issue Section:
Research Papers
Keywords:
questioned documents, tracings, forgery, infrared luminescence, writing machines, guidelines, sister lines, indentations

References

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