Shielding Aadhar: UIDAI Introduces 2-tier Security (Download PDF)


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The Unique Identification Authority of India (UIDAI) has introduced two-tier security features namely Virtual ID and Limited KYC address privacy concerns. Two-tier security would - Strengthen security and privacy of Aadhaar data, Reduce the collection of Aadhaar numbers by various agencies.

Image of UIDAI Introduces 2-tier Security

Image of UIDAI Introduces 2-tier Security

Image of UIDAI Introduces 2-tier Security

What is VID?

  • A (Virtual ID) VID will be a random 16-digit number with the Aadhaar number.

  • An Aadhaar holder can use in lieu of his/her Aadhaar number at the time of authentication for any service.

  • Users can generate as many virtual Ids as they want or after every authentication or every 10 seconds.

  • The old id will be cancelled as soon as a new one is created.

  • It will be obligatory for all agencies that undertake authentication to accept the VIDs from their users.

  • Only the Aadhaar holder will be able to generate a VID and no other entity, including authentication user agencies (AUAs), can do it on their behalf.

What is Limited KYC?

  • It was introduced to address issue of storage of Aadhaar number within various databases.

  • It will only provide need-based or limited details of user to authorised agency that is providing particular service.

  • It will evaluate Authentication User Agencies (AUAs) and split them into two categories: Global AUAs and Local AUAs.

What Are Global AUAs?

  • Global AUAs will have access to full demographic details of an individual along with the ability to store Aadhaar numbers within their system.

What are Local AUAs?

  • AUAs branded as Local AUAs neither will get access to full KYC, nor can store Aadhaar number on their systems.

  • AUAs will get tokenized number (UID Token) issued by UIDAI to identify their customers. It will be 72 character alphanumeric.

Face Recognition for Aadhaar Authentication

  • Face recognition to be used as a mode of authentication from July 1 2018 onwards.

  • This feature will be used only in “fusion mode”, along with one existing mode of authentication such as fingerprint, iris, or one-time password.

  • Useful for people not able to biometrically authenticate due to their worn out fingerprints, old age or hard working conditions.

What is Aadhaar?

  • Aadhaar is a 12-digit unique identity number issued to all Indian residents based on their biometric and demographic data.

  • The data is collected by the Unique Identification Authority of India (UIDAI), a statutory authority established in January 2009 by the Government of India, under the jurisdiction of the Ministry of Electronics Ministry of Electronics and Information technology.

The Word ‘Aadhaar’

  • Oxford Dictionaries has chosen ‘Aadhaar’ as the Hindi word of 2017.

  • The word gained popularity due to Aadhaar card.

  • The announcement was made at a session “Oxford Dictionaries’ Hindi Word of the Year” during the ongoing Jaipur Literature Festival in Jaipur.

  • Other words such as ‘Mitron’, ‘Notebandi’, ‘Gau-Rakshak’ were also considered, but the widespread discussions and debates around ‘Aadhaar’ was reason it was selected as the word of the year

- Published/Last Modified on: March 12, 2018

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