The Unique Identification Authority of India (UIDAI) was established in 2009 by the Government of India under the Ministry of Electronics and Information Technology (MeitY).
It is the central authority responsible for implementing the Aadhaar project, which aims to provide a unique 12-digit identity number to every resident of India.
Download Aadhaar
Get a secure, password-protected electronic version of your Aadhaar instantly.
Update Aadhaar Details
Update your identity or address documents online for free until June 14, 2026.
Check Enrollment/Update Status
Easily track your Aadhaar enrollment or update progress.
Retrieve EID / Aadhaar Number
Recover your Aadhaar or enrollment ID effortlessly.
Order Aadhaar PVC Card
Request a durable, wallet-friendly PVC version of Aadhaar.
Check PVC Card Status
Track the delivery status of your Aadhaar PVC card order.
Locate Enrollment Center
Find nearby Aadhaar centers for new enrollments or updates.
Book an Appointment
Schedule a visit for Aadhaar services at your convenience.
Check Aadhaar Validity
Verify if your Aadhaar is active and valid.
Aadhaar Services Offered by UIDAI
The UIDAI offers a range of services that make it easy to enrol, update, retrieve, and manage Aadhaar. Below is a complete, step-by-step guide to these services:
Download Aadhaar (e-Aadhaar)
Download a secure digital copy of your Aadhaar for use in various services.
- Open the Aadhaar Download Page:
Visit https://myaadhaar.uidai.gov.in/, and click on the Download Aadhaar option.
- Enter Your Details:
- Provide your Aadhaar Number, Enrolment ID (EID), or Virtual ID (VID).
- Complete the captcha displayed on the screen.
- Authenticate Using OTP:
- An OTP will be sent to your registered mobile number.
- Enter the OTP and proceed.
- Download the PDF:
- Once verified, download the e-Aadhaar PDF file.
- The PDF is password-protected. Use the first four letters of your name (in CAPITALS) and your birth year as the password.
Check Enrolment or Update Status
Track the status of your Aadhaar enrolment or update request.
- Visit https://myaadhaar.uidai.gov.in/, and click on the Check Enrolment & Update Status option.
- Enter URN or EID:
- Provide your Update Request Number (URN) or Enrolment ID (EID).
- Authenticate via OTP.
The portal will display the status of your request.
Document Update
If your Aadhaar details (e.g., name, address, date of birth, or gender) have changed or need correction, you can update them online.
- Visit the UIDAI Portal: Open https://myaadhaar.uidai.gov.in/, and click on the Document Update option.
- Log In:
- Enter your Aadhaar Number.
- Authenticate using the OTP sent to your registered mobile number.
- Select "Update Aadhaar":
- Choose the information you want to update (e.g., address, name, date of birth, gender).
- Ensure you have valid supporting documents ready (e.g., Proof of Identity (PoI), Proof of Address (PoA)).
- Upload Documents:
- Attach the scanned copies of the required documents.
- Ensure the documents are clear and valid as per UIDAI guidelines.
- Review and Submit:
- Verify all the entered details carefully.
- Submit your request and note down the Update Request Number (URN) for tracking.
- Track Status: Use your URN on the same portal to track the progress of your update request.
Retrieve EID or Aadhaar Number
- Visit https://myaadhaar.uidai.gov.in/, and click on the Retrieve EID / Aadhaar number option.
- Enter Your Information:
- Fill in your full name and registered mobile number or email ID.
- Select whether you want to retrieve your Aadhaar Number or Enrolment ID.
- Verify Details:
- Complete the captcha and request an OTP.
- Enter the OTP received on your mobile/email.
- Retrieve Your Number:
- Your Aadhaar Number or EID will be sent to your mobile/email.
Verify Email/Mobile Number
Ensure that your registered email and mobile number are linked to Aadhaar for hassle-free services.
- Visit https://myaadhaar.uidai.gov.in/, and click on the Verify Email / Mobile option.
- Enter Aadhaar Details:
- Provide your Aadhaar Number and registered mobile/email.
- Enter the captcha code.
- Authenticate:
- An OTP will be sent to your mobile/email.
- Enter the OTP to complete the verification.
- Confirmation: If the details are correct, a confirmation message will be displayed.
Generate Virtual ID (VID)
A Virtual ID (VID) is a temporary, revocable 16-digit number that you can use in place of your Aadhaar Number for enhanced privacy.
- Visit https://myaadhaar.uidai.gov.in/, and click on the VID Generator option.
- Enter your Aadhaar Number and authenticate using OTP.
- Choose "Generate New VID" or "Retrieve Existing VID."
Your VID will be displayed on the screen and sent to your registered mobile number.
Order Aadhaar PVC Card
The Aadhaar PVC card is a durable, wallet-sized version of Aadhaar.
- Visit https://myaadhaar.uidai.gov.in/, and click on the Order Aadhaar PVC Card option.
- Enter Your Aadhaar Number:
- Complete the captcha for verification.
- Pay Online:
- Proceed to pay the nominal fee (₹50 approx).
- Confirm your request.
Your card will be delivered to your registered address.
Locate Enrolment Center
Find Aadhaar Seva Kendras near you for enrolment or updates.
- Visit https://myaadhaar.uidai.gov.in/, and click on the Locate Enrolment Center option.
- Search:
- Enter your PIN code, city, or state.
- View the list of nearby centers with addresses and contact details.
Aadhaar Enrolment Process
The Aadhaar enrolment process is designed to be simple and convenient, ensuring that all Indian residents can obtain their unique 12-digit Aadhaar number.
Below is a detailed step-by-step guide to the Aadhaar enrolment process:
Step 1: Locate an Enrolment Center
- Visit the official UIDAI website at myaadhaar.uidai.gov.in to find an authorized Aadhaar enrolment center near you.
- You can search by state, postal code, or specific location to identify the nearest facility.
Step 2: Book an Appointment (Optional)
- For faster service, book an appointment online through the UIDAI portal.
- While walk-ins are generally allowed, scheduling an appointment minimizes waiting time.
Step 3: Prepare Required Documents
Bring original documents (no photocopies are required) for verification. Key documents include:
- Proof of Identity (POI): Passport, PAN card, Voter ID, Driving License, etc.
- Proof of Address (POA): Utility bills, bank statement, property document, etc.
- Proof of Date of Birth (DOB): Birth certificate, SSLC certificate, or passport.
- Proof of Relationship (POR): For children below 5 years enroling through their parents.
Step 4: Visit the Enrolment Center
- On the scheduled day or at your convenience, visit the Aadhaar enrolment center.
- Fill out the Aadhaar enrolment form if it’s not already pre-filled.
- Ensure that all the details entered are correct, including name, address, date of birth, and mobile number.
Step 5: Biometric Data Collection
- The enrolment officer will capture your biometric details, including:
- Photograph
- Fingerprints (all 10 fingers)
- Iris scan (both eyes)
These details are mandatory and ensure the uniqueness of your Aadhaar.
Step 6: Document Verification
- Submit your original documents for verification. They will be scanned and returned to you immediately.
- Ensure the information entered matches the details on your documents.
Step 7: Acknowledgment Receipt
- After completing the process, you will receive an acknowledgment receipt containing a 14-digit enrolment ID (EID).
- Keep this receipt safe as it can be used to check the status of your Aadhaar.
Step 8: Wait for Aadhaar Generation
- Aadhaar generation typically takes 15–90 days. However, in some cases, it may be processed sooner.
- You can check the status of your Aadhaar using your EID on the UIDAI website or via the My Aadhaar portal.
Step 9: Download or Receive Aadhaar
- Once generated, you can download an e-Aadhaar from the UIDAI portal using your Aadhaar number or EID.
- Alternatively, a physical Aadhaar card will be sent to your registered address by post.
Important Points to Remember
- Enrolment for Aadhaar is free of cost.
- For children below 5 years, only a photograph and proof of relationship are required. Their biometric details will be updated after the age of 5 and again at 15 years.
- Mobile number and email registration are recommended to access Aadhaar-related online services.
- Any discrepancies in data can be corrected during enrolment or later through the Aadhaar update process.
UIDAI - Unique Identification Authority of India
Managing Aadhaar - World's Largest Biometric Identity Program
About UIDAI
The Unique Identification Authority of India (UIDAI) is the backbone of India's digital identity infrastructure, managing the Aadhaar system, the world's largest biometric-based identity program.
History of UIDAI and Aadhaar
Development Timeline
The concept of Aadhaar was introduced to provide a robust identity management system that reduces fraud and ensures efficient delivery of services. Here is a brief timeline of its development:
UIDAI was established, with Nandan Nilekani appointed as its first chairman.
The first Aadhaar number was issued on 29 September 2010 in Tembhli village, Maharashtra, marking the official launch of the Aadhaar program.
The Aadhaar Act was passed, providing statutory backing to the UIDAI and defining its powers and responsibilities.
The Supreme Court upheld the constitutional validity of Aadhaar but limited its mandatory use to government welfare schemes and subsidies.
UIDAI and Aadhaar (Key Developments)
Recent Advancements
UIDAI has introduced several advancements to enhance Aadhaar's scope, usability, and security.
Expansion of Health Coverage
The Union Cabinet approved health coverage for senior citizens aged 70 and above under the Ayushman Bharat Pradhan Mantri Jan Arogya Yojana (AB PM-JAY), benefiting 6 crore senior citizens with ₹5 lakh annual health insurance. Aadhaar-linked cards ensure seamless coverage.
Free Document Update Service
UIDAI made the document update service free until 14th June 2026. Residents can update their Proof of Identity (PoI) and Proof of Address (PoA) online without charges.
Technology Modernization
UIDAI introduced AI and ML tools to detect fraudulent activities. The backend infrastructure handles over 50 billion transactions annually.
Recent Milestone: Authentication transactions crossed 150 billion by April 2025, with over 210 crore transactions in April 2025 alone.
Functions of UIDAI
Core Responsibilities
UIDAI is tasked with a range of responsibilities to ensure Aadhaar's seamless implementation and adoption:
Manages enrolment by capturing biometric (fingerprints and iris scans) and demographic data. Each Aadhaar number is unique and linked to individual data.
Facilitates Aadhaar-based authentication through biometric or OTP methods, enabling secure identity verification.
Ensures confidentiality and integrity of Aadhaar data through advanced encryption and secure storage technologies.
Frames policies and procedures for Aadhaar usage across banking, healthcare, and education sectors.
Provides mechanisms for addressing grievances related to Aadhaar services, ensuring user satisfaction.
How does Aadhaar work?
Aadhaar System Process
Aadhaar works as a unique identity system that links an individual's biometric and demographic information to a 12-digit number. Here's how it functions:
Data Collection
UIDAI collects fingerprints, iris scans, and demographic details like name, address, date of birth, and gender during enrolment.
Unique Number Generation
Collected data is processed to generate a unique 12-digit Aadhaar number assigned to the individual.
Authentication Process
Identity verification using biometric or OTP-based methods ensures secure and tamper-proof verification.
Service Integration
Links to bank accounts, mobile numbers, and government schemes, facilitating direct benefit transfers.
UIDAI Infrastructure and Security
Data Centers and Physical Security
Two Primary Data Centers
Bengaluru Data Center: 6,245 sqm facility with 6 petabytes storage capacity and 4,000+ servers
Manesar Data Center: Located at Industrial Model Township (IMT), Haryana - inaugurated January 7, 2013
Combined Storage: Approximately 7,000 servers across both locations storing all Aadhaar data
Physical Protection: 13-feet high and 5-feet thick walls, blast-proof construction with Category 'C' rating
Security Force: 162-member Central Industrial Security Force (CISF) squad guarding facilities
Advanced Security Features
AES-256 session key encrypted using UIDAI's 2048-bit public key for data protection
16-digit temporary, revocable number mapped to Aadhaar for enhanced privacy
First 8 digits hidden (XXXX-XXXX-1234) for secure document sharing
Data encrypted instantly when finger touches sensor, before transmission
Aadhaar Seva Kendra Network
Service Infrastructure
Nationwide Service Network
88 Aadhaar Seva Kendras across 72 cities including all metro cities and state capitals
66,000+ Aadhaar Centers operated by banks, post offices, BSNL, and state governments
Accessibility Features: Wheelchair-friendly, air-conditioned environment, special provisions for elderly
Family Profiles: mAadhaar app allows up to 5 family member profiles per user
Online Appointments: Available through appointments.uidai.gov.in
Current Enrollment and Usage Data
Total Aadhaar numbers issued
Authentication transactions completed
Population coverage achieved
Monthly authentication transactions (2025)
JAM Trinity Impact
The Jan Dhan-Aadhaar-Mobile (JAM) trinity has revolutionized financial inclusion and welfare delivery in India:
Direct Benefit Transfer (DBT) Success
₹40.81 lakh crore transferred to citizens through DBT since inception
₹3.5 lakh crore saved by reducing inefficiencies and leakages
85.45+ crore Aadhaar numbers linked to bank accounts through Aadhaar Payment Bridge
99.9% transaction success rate achieved
Benefits of Aadhaar System
Key Advantages
Aadhaar has emerged as a cornerstone of India's identity and digital infrastructure for the following reasons:
Aadhaar is accepted across India as proof of identity and address for 1.38+ billion residents.
Aadhaar-linked schemes reduce leakage and ensure subsidies reach rightful beneficiaries with 99.9% success rate.
Biometric authentication with AI/ML fraud detection ensures accurate identity verification.
Key enabler of JAM trinity - connecting 85.45+ crore Aadhaar numbers to bank accounts.
AI-powered face authentication adopted by 100+ entities for contactless verification.
788+ million Aadhaar numbers linked to bank accounts, enabling seamless banking access.
Helpline
UIDAI Support Services
Phone: 1947 (24x7 support)
Email: [email protected]
Services: Aadhaar-related queries, enrolment, updates, status tracking, and grievance redressal
Availability: 24 hours a day, 7 days a week