What is the primary advantage of using biometrics for authentication?

• A. It can be easily shared among users
• B. It provides a unique identifier difficult to replicate
• C. It enhances the speed of transaction approvals
• D. It requires minimal equipment

Answer: (B)

Using biometrics for authentication has the primary advantage of providing a unique identifier that is difficult to replicate. Biometrics relies on individual physical or behavioral characteristics, such as fingerprints, facial recognition, or iris patterns. These traits are inherently unique to each person, making it exceptionally challenging for someone to spoof or duplicate them.

This uniqueness is a critical element in providing strong security for systems that implement biometric authentication. Unlike passwords or PINs, which can be guessed, stolen, or shared among users (a substantial risk as with the first option), biometric traits cannot be easily shared or transferred between individuals.

Additionally, while biometrics can improve transaction speeds, this is not typically regarded as the primary advantage. The use of specific equipment, such as fingerprint scanners or facial recognition cameras, is necessary, but this does not negate the core benefit of uniqueness and security that biometrics provide compared to other methods of authentication.