Biometric Authentication is a security method that verifies a person’s identity using a distinctive physical or behavioral characteristic rather than relying solely on passwords, PINs, or tokens. A system captures a biometric sample, converts it into measurable features, and compares those features with an enrolled reference. Depending on the application, authentication may use fingerprints, facial characteristics, iris patterns, voice, or other biometric signals.
The technology is widely used for device unlocking, digital banking, identity verification, access control, and secure transactions. Effective systems typically incorporate liveness detection and carefully configured matching thresholds to reduce spoofing and false matches. Unlike a password, a biometric trait cannot simply be replaced when compromised, making secure storage and protection of biometric data especially important.
