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UIDAI — Unique Identification Authority of India logo

Old Version

New Version

UIDAI — Unique Identification Authority of India logo

Understand your Aadhaar

Understand Aadhaar, its features, enrolment process, benefits, security and its role in enabling trusted digital identity and governance.

In this section

About your Aadhaar

Features of Aadhaar

Usage of Aadhaar

Aadhaar Enrolment

Aadhaar Generation

Updating Data on Aadhaar

About your Aadhaar

Know about Aadhaar, a unique 12-digit identity number issued by UIDAI to residents of India through a free enrolment process.

Features of Aadhaar

Features of Aadhaar include uniqueness, portability, secure authentication, scalable technology and a random identity number.

Usage of Aadhaar

Usage of Aadhaar enables secure identity verification, direct benefit transfer, transparency and seamless access to services nationwide.

Aadhaar Enrolment

Aadhaar enrolment includes form submission, biometric capture, document verification and issuance of Enrolment ID slip.

Aadhaar Generation

Aadhaar generation includes quality checks, validations and de-duplication to ensure secure and unique Aadhaar issuance.

Updating Data on Aadhaar

Update Aadhaar demographic and biometric details online or at enrolment centres to keep your Aadhaar accurate and up to date.

Content Information

Published on: 17 Apr 2026

Last Updated: 09 Jun 2026

Frequently Asked Questions

You can download the Aadhaar app on your Android/iOS device from the Play Store/App Store. For Android: https://play.google.com/store/apps/details?id=in.gov.uidai.pehchaan  For iOS: https://apps.apple.com/in/app/aadhaar/id6744029871

After downloading the app, the Aadhaar Number Holder (ANH): →Select Language→ Enters their Aadhaar number → Agrees to the Terms and Conditions and Privacy Policy → Chooses the SIM card → Performs Face Authentication → Gets registered on the app → Sets a 6-digit PIN to secure access to the app.

Presently, the Aadhaar app offers various services like - Mobile Number Update, Address Update, Biometric lock/unlock, Selective Sharing of Aadhaar Verifiable Credential, check Authentication History, download e-Aadhaar, share Contact Card, Track my request, etc.

View more F.A.Qs

Content Information

Published on: 17 Apr 2026

Last Updated: 09 Jun 2026

Understand your Aadhaar - Unique Identification Authority of India | Government of India