ITPEC IP April 2021 Question 35
Which of the following is an appropriate example of biometric authentication?
Explanation
Recognising a signature's shape, stroke order and pen pressure with a reader — a behavioural trait of the person, so it is biometric authentication.
Biometric authentication identifies a person by what they are: physical traits (fingerprint, face, iris, vein pattern) or behavioural traits (signature dynamics, voice, gait). The reader records how the signature is written, not only how it looks, and compares it with the registered template; a forger can copy the shape but hardly the stroke order and pressure.
Answer (c)
Why not others:
- •(a) — the line drawn through nine dots is a pattern the user remembers: knowledge-based
- •(b) — a user ID and password are also knowledge the user remembers
- •(d) — picking memorised illustrations is a picture password, again knowledge-based
Key rule: Authentication factors are knowledge (password, pattern), possession (IC card, token) and biometrics (body or behaviour); only biometrics uses the person themselves.
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