![]() Pantograph methods, apparatus and systems based on UCR/GCRĪuthenticating printed objects using digital watermarks associated with multidimensional quality metricsġ. Void pantographs and methods for generating the same using at least one test void pantographĪuthenticable anti-copy document and method to produce an authenticable anti-copy document with a combined void pantograph and faux watermark security features Method for adjusting quality of a pantograph background pattern Method and system for generating a document having a layered void pantograph Method and apparatus for including a security feature within a document Method and system for determining void pantograph settings ![]() Method and system for creating a validation document for security Semiautomatic multifunction device-based validation of secure documents
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