Biometric security is a type of security system that uses unique physical characteristics or behavioral traits of an individual to identify and verify their identity. This technology relies on the fact that every individual has unique biometric markers such as fingerprints, facial recognition, iris scans, voice recognition, and even the way they walk. Biometric security systems use advanced algorithms and pattern recognition software to match these unique biometric markers to a pre-registered profile in order to grant access to secure areas, devices, or data. Biometric security is increasingly popular in high-security environments such as airports, military installations, and government buildings, as well as in everyday use for personal devices and home security systems.