Biometric Authentication is a security process that uses unique physical characteristics of individuals to verify their identity. Common biometric traits include fingerprints, facial recognition, iris patterns, and voice recognition. This method is often used in smartphones, security systems, and access control to ensure that only authorized users can gain entry. The main advantage of biometric authentication is its convenience and accuracy. Unlike passwords, which can be forgotten or stolen, biometric traits are inherently linked to the individual. As technology advances, biometric systems are becoming more sophisticated, making them a popular choice for enhancing security in various applications.