In addition to fingerprint scanning, which of the following can be used in the biometric identification of a person?
- Iris scanning
- Retinal scanning
- Voice recognition
Select the correct answer using the code given below.
[UPSC Civil Services Exam – 2014 Prelims]
(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
Answer: (d)
Explanation:
Iris scanning:
- This is a biometric technology that utilizes visible and near-infrared light to capture a high-contrast image of an individual’s iris.
Retinal scanning:
- This form of identification technology maps the distinctive patterns of a person’s retina. The blood vessels in the retina absorb light more efficiently than surrounding tissue and can be readily identified with appropriate lighting.
- Retinal scanning is highly accurate and difficult to counterfeit.
Voice recognition:
- It is a computer software program that can interpret and decode human speech, enabling it to operate a device or execute commands.
