UPSC Prelims 2014 Question:

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:

Explanation: 

• Biometrics allows a person to be identified and authenticated based on recognizable and verifiable data, unique and specific.
• Iris scanning is the process of using visible and near-infrared light to take a high-contrast photograph of a person’s iris. It is a form of biometric technology in the same category as face recognition and fingerprinting. So, point 1 is correct.
  
  
• Retina scanning is a biometric verification technology that uses an image of an individual’s retinal blood vessel pattern as a unique identifying trait for access to secure installations. Biometric verification technologies are based on ways in which individuals can be uniquely identified through one or more distinguishing biological traits. Unique identifiers include fingerprints, hand geometry, earlobe geometry, retina and iris patterns, voice waves, DNA and signatures. So, point 2 is correct.
  
  
• Voice recognition is a computer software program with the ability to decode the human voice. Voice recognition is commonly used to operate a device, perform commands, or write without having to use a keyboard, or mouse, or press any buttons. It is a form of biometric technology. So, point 3 is correct.
  
  

Therefore, option (4) is the correct answer. 

Subject: Science & Technology | Recent Developments