The science of uniquely identifying a person based on his or her physiological or behavioral characteristics is termed biometrics. Physiological characteristics include face, iris, fingerprint, and DNA, whereas behavioral modalities include handwriting, gait, and {\ldots} Biometric authentication systems have widespread applications in national identification programs, banking, attendance system, and surveillance. Recent development and advances in technology has further led to the automation of these systems. Automated {\ldots}