CompTIA Security+ (SY0-601) — Question 307

Which of the following biometric authentication methods is the most accurate?

Answer options

• A. Gait
• B. Retina
• C. Signature
• D. Voice

Correct answer: B

Explanation

The correct answer is B, Retina, as retinal scans provide a unique pattern of blood vessels that is highly distinctive and difficult to replicate, making it very accurate. In contrast, gait, signature, and voice recognition can be influenced by various factors such as physical changes, user behavior, or environmental noise, which may reduce their accuracy.