What does the term "dynamic biometrics" refer to?

• A. Static fingerprint scans
• B. Recognition based on typing rhythm or voice pattern
• C. A stored digital signature
• D. Access control via smart keys

Answer: (B)

Dynamic biometrics refers to biometric authentication methods that capture and analyze behavioral traits that can change over time, such as typing rhythm or voice patterns. This approach contrasts with static biometrics, which rely on more permanent physical attributes like fingerprints or facial recognition.

In the context of security, dynamic biometrics provides an additional layer of authentication since it assesses how an individual behaves rather than just their physical features. This makes it harder for unauthorized users to replicate or spoof these traits, enhancing security measures.

In contrast, the other options focus on fixed or unchanging biometrics or authentication methods that do not incorporate behavioral dynamics, such as fingerprints, digital signatures, or smart keys.