Biometric authentication is the only method that requires users to provide a physical attribute like a fingerprint or facial scan to successfully log in and access a system.
Table of Contents
Question
Which authentication method requires the user to provide a physical attribute to authenticate successfully?
A. biometric
B. password
C. multifactor
D. certificate
Answer
A. biometric
Explanation
Biometric authentication is a security process that relies on the unique biological characteristics of an individual to verify their identity. It requires the user to provide a physical attribute such as a fingerprint, facial scan, iris scan, or voice sample in order to successfully authenticate and gain access to a system or device.
The other authentication methods listed do not require a physical attribute:
- A password is a secret string of characters that a user memorizes and enters to verify their identity. It does not involve any physical attributes.
- Multifactor authentication combines two or more independent credentials, such as a password and a one-time code, but these factors don’t necessarily include biometrics.
- A digital certificate uses cryptography to prove the ownership of a public key, tying it to an organization or individual. But it does not require the user to provide any of their physical characteristics.
So in summary, biometric authentication is the only option that inherently requires a user to present a physical attribute of themselves, making it the correct answer. The others rely on secrets, additional factors, or cryptographic proofs rather than biological traits.
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