Biometric authentication is rapidly becoming the preferred method for verifying identities due to its reliance on unique biological and behavioral traits, offering a more secure alternative to traditional passwords. This method is characterized by its use of inherent human characteristics such as fingerprints, facial recognition, iris scans, and voice patterns, which are difficult to fake or steal. The increasing integration of biometric technologies in consumer devices, driven by companies like Apple and Google, has made this form of authentication more accessible and convenient, minimizing the need for users to remember complex passwords and reducing security vulnerabilities. Despite its advantages, biometric authentication faces challenges such as potential biases in training data and the inability to change biometric data if compromised. Privacy concerns have led to legislative proposals aimed at regulating the use of biometric information. The rise of technologies like passkeys, which enhance biometric authentication's adoption, highlights a shift towards more seamless and secure digital interactions.