What feature does biometrics use to identify and verify the identity of individuals?

What feature does biometrics use to identify and verify the identity of individuals?

• A. Passwords
• B. Smart cards
• C. Fingerprints
• D. Facial recognition software

Answer: (C)

Biometrics utilizes unique physical characteristics of individuals to identify and verify their identity, making it a highly secure method of authentication. Fingerprints are one of the most commonly used biometric features due to their uniqueness and permanence; no two individuals have the same fingerprints, which provides a reliable means of identification.

When someone presents their fingerprint to a biometric scanner, the device captures the pattern and compares it to stored fingerprints in a database to confirm identity. This process significantly enhances security systems since it relies on inherent traits rather than something that can be forgotten, stolen, or easily replicated.

In contrast, while passwords and smart cards can provide access control, they do not use biometric data and can be compromised. Facial recognition software is indeed a biometric method, but the question specifically asks about the feature used in biometrics, which directly points to the use of fingerprints in this context as a foundational example.