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Biometrics is a technological and scientific authentication method based on biology and used in information assurance (IA). Biometric identification authenticates secure entry, data or access via human biological information such as DNA or fingerprints. Biometric systems include several linked components for effective functionality.
The biometric system connects an event to a single person, whereas other ID forms, such as a personal identification number (PIN), may be used by anyone.
Biometrics is used for security systems and replacement systems for ID cards, tokens or PINs. A key difference between biometrics and other systems is that biometric verification of physical information requires a person to be present, which adds a layer of security because other ID types can be stolen, lost or forged.
A biometric system includes the following components and features: