Traditionally, counterfeit deterrent features restricted counterfeiting to only the dedicated craftsman. With the advent of highly sophisticated reprographic systems, this is no longer true. Redesign of U.S. banknotes is necessary in order to incorporate additional features aimed at discouraging counterfeiting using advanced copiers-scanners-printers. This volume evaluates a large number of such features while recommending a comprehensive national strategy for anticipating and responding to counterfeiting threats.