Biometrics is categorized into physiological and behavioral characteristics. Physiological characteristics include fingerprints, face recognition, DNA, palm prints, and others, whereas behavioral characteristics include gait, voice, typing rhythm, and others. With technological advancements, brain and heart signals are used for biometric authentication. In addition, operator signature has emerged as a trend for authentication to ensure data safety. br Enquiry About Report: br Trend of issuing electronic passports containing iris, fingerprint, and facial information and integration of consumer electronics with biometrics fuel growth of the global biometrics industry.