Book excerpt: The rapid pace at which digital printing is advancing is posing a very serious challenge to the U.S. Department of the Treasury's Bureau of Printing (BEP). The BEP needs to stay ahead of the evolving counterfeiting threats to U.S. currency. To help meet that challenge, A Path to the Next Generation of U.S. Banknotes provides an assessment of technologies and methods to produce designs that enhance the security of U.S. Federal Reserve notes (FRNs). This book presents the results of a systematic investigation of the trends in digital imaging and printing and how they enable emerging counterfeiting threats. It also provides the identification and analysis of new features of FRNs that could provide effective countermeasures to these threats and an overview of a requirements-driven development process that could be adapted to develop an advanced-generation currency.