state gov Kerala PSC Degree (Common Preliminary Examination) Mock Test Series 2025 Current Affairs Science and Technology
In addition to fingerprint scanning, which of the following can be used in the biometric identification of a person?
1. Iris scanning
2. Retinal scanning
3. Voice recognition
Select the correct answer using the code given below.
1
1 only
2
2 and 3 only
3
1 and 3 only
4
1, 2 and 3