In addition to fingerprint scanning, which of the following can be used in the biometric identification of a person?

Correct Option (d):

All three listed techniques are established methods for biometric identification, complementing or serving as alternatives to fingerprint scanning.

• Iris scanning: This technology captures and analyzes the intricate and unique patterns within the iris, the colored portion of the eye. It is highly precise and widely utilized for identity verification.
• Retinal scanning: This method involves examining the distinct arrangement of blood vessels on the retina at the back of the eye. It is considered a highly secure biometric due to the unique and stable nature of these patterns.
• Voice recognition: This technique identifies individuals by analyzing unique vocal characteristics, including pitch, tone, and speech rhythm. It is classified as a behavioural biometric.

Incorrect Options:

• Option (a) is incorrect because it excludes retinal scanning and voice recognition, both of which are valid biometric identification methods.
• Option (b) is incorrect because it omits iris scanning, which is a highly accurate and widely used biometric technology.
• Option (c) is incorrect because it excludes retinal scanning, which is a recognized physiological biometric identifier.