Biometric data are data generated through a biometric process, including a person’s physiological and behavioral features. Biometric data are basically used to design systems for individual authentication and identification. People generally store their valuable data in laptops and mobile devices protected mainly by a password. However, people are not very careful about choosing or storing their passwords, making their valuable data insecure. By making use of biometric data, users can be identified more easily and securely.

Day by day, such authentication systems are increasing in popularity—one simple reason being that biometric data cannot be guessed like a password or user ID. Also, users are not bothered to remember or store carefully a password for authentication. Biometric data are divided into two categories: structural biometric and behavioral ...

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