Biometric authentication uses unique biological characteristics, such as fingerprints, facial recognition, or iris patterns, to verify an individual's identity. This method enhances security in various applications, including mobile devices, banking, and access control systems. Unlike traditional authentication methods like passwords, biometric data is harder to replicate or steal, providing a higher level of protection against unauthorized access. Moreover, the user experience is often more seamless, as individuals can authenticate quickly without remembering complex passwords.