A scheme for PIV visual card topography

promotes the U.S. economy and public welfare by providing technical leadership for the Nation's measurement and standards infrastructure. ITL develops tests, test methods, reference data, proof of concept implementations, and technical analyses to advance the development and productive use of information technology. ITL's responsibilities include the development of management, administrative, technical, and physical standards and guidelines for the cost-effective security and privacy of non-national security-related information in Federal information systems. This special publication 800-series reports on ITL's research, guidelines, and outreach efforts in information system security, and its collaborative activities with industry, government, and academic organizations. wish to thank their colleagues who reviewed drafts of this document and contributed to its development. Special thanks to Jeff Cua and Tanya Brewer for their contributions to the color specification and card topography. The authors gratefully acknowledge and appreciate the support