Biometric security is a technology 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 enhances security by ensuring that only authorized users can access sensitive information or secure areas. Unlike traditional passwords or PINs, which can be forgotten or stolen, biometric data is inherently linked to the individual. As a result, biometric security systems are increasingly used in various applications, such as smartphones, security systems, and financial transactions, providing a more reliable and convenient way to protect personal information.