"The volume will have a great influence on the study of the subject. Exhaustively researched and presented with exemplary balance in presenting what is needed at the moment, the creation of this book is fully worthy of its demanding subject. No future evaluation or study or survey of biometrics theory, methods, and applications will be able to ignore this remarkable achievement in 500 pages in 26 chapters that will endure and will have impact on every aspect of the study of biometrics .....a reality that the authors powerfully communicate to researchers, security experts, policy makers, engineers, and graduate students. The editors' good sense, tact and balance in accomplishing their task are deeply impressive." (Current Engineering Practice, 2011)

"Filling a gap in the existing literature by comprehensively covering system, processing, and application aspects of biometrics, based on a wide variety of biometric traits, the book provides an extensive survey of biometrics theory, methods, and applications, making it an indispensable source of information for researchers, security experts, policy makers, engineers, practitioners, and graduate students. The book's wide and in-depth coverage of biometrics." (Current Engineering Practice, 2010)