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What is biometrics?

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Quick answer

Biometrics is the use of unique physical or behavioral traits — like fingerprints, faces, voices, or irises — to identify people. Because these traits are hard to fake or forget, biometrics is widely used to unlock phones and secure access.

Key things to understand

  1. It identifies people by unique body or behavior traits.
  2. Examples: fingerprint, face, iris, and voice.
  3. It's hard to forge or forget, unlike passwords.
  4. It's used in phones, borders, and secure facilities.

People also ask

What is biometrics?
Using unique physical or behavioral traits, like fingerprints or faces, to verify a person's identity.
Is biometric security safe?
It's convenient and hard to fake, but if biometric data is stolen it can't be changed like a password.
What are common uses of biometrics?
Unlocking phones, airport identity checks, and securing access to buildings and devices.