Which category includes methods such as facial recognition, retina scanning, fingerprinting, and hand geometry?

Which category includes methods such as facial recognition, retina scanning, fingerprinting, and hand geometry?

• A. Encryption
• B. Decryption
• C. Biometrics
• D. Cryptography

Answer: (C)

Biometric authentication uses unique physical traits to verify someone’s identity. Facial recognition, retina scanning, fingerprinting, and hand geometry rely on inherent characteristics of a person rather than something they know or possess. In practice, the system enrolls a reference template for each trait and later compares the live measurement to that template to determine a match. This differs from encryption, decryption, or cryptography, which are about protecting data through algorithms and keys rather than identifying who is accessing it. So, these methods belong to the biometrics category.

Biometric authentication uses unique physical traits to verify someone’s identity. Facial recognition, retina scanning, fingerprinting, and hand geometry rely on inherent characteristics of a person rather than something they know or possess. In practice, the system enrolls a reference template for each trait and later compares the live measurement to that template to determine a match. This differs from encryption, decryption, or cryptography, which are about protecting data through algorithms and keys rather than identifying who is accessing it. So, these methods belong to the biometrics category.