ITPEC FE Morning April 2021 Question 37
Biometric authentication includes a verification method that extracts physical characteristics and another verification method that extracts behavioral characteristics. Which of the following is the method that uses behavioral characteristics?
Explanation
Signature verification from pen speed and pressure — it measures how a person acts, so it is behavioral.
Biometric authentication uses either physical characteristics, the shape of part of the body, or behavioral characteristics, the way a person does something. Writing a signature is an action, and the speed, pressure and stroke order of the pen are individual habits that are hard to copy even when the finished signature looks the same.
Answer (a)
Why not others:
- •(b) — bifurcation angles and distances of blood vessels are vein pattern authentication, a physical characteristic
- •(c) — minutiae in the pattern of ridges are fingerprint authentication, physical
- •(d) — the wrinkles between the pupil and the outer edge of the eye are iris authentication, physical
Key rule: If the method measures what the body is (fingerprint, vein, iris, face), it is physical; if it measures what the person does (signature, keystrokes, gait), it is behavioral.
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