The Unique Identification Authority of India (UIDAI) is a statutory authority established under the provisions of the Aadhaar Act, 2016. It was created to issue Unique Identification numbers (UID), named "Aadhaar", to all residents of India. This website serves as an informational blog to help you navigate the official services.
Click below to visit the official UIDAI portal for specific tasks:
The Unique Identification Authority of India (UIDAI) has revolutionized how identity is verified in India. Established under the Ministry of Electronics and Information Technology (MeitY), the Aadhaar project is the world's largest biometric ID system. As of 2026, Aadhaar is not just a card; it is the backbone of the "Digital India" initiative, facilitating a seamless interface between the government and the residents.This Aadhaar UIDAI delves deep into every aspect of the Aadhaar ecosystem, ensuring you can navigate downloads, updates, and troubleshooting without needing to visit an enrollment center unnecessarily.
Carrying a physical card is no longer necessary. The e-Aadhaar is a digitally signed, legally valid PDF.
If your Aadhaar was issued more than 10 years ago, you must "re-verify" it to keep your records active.
You no longer need to visit a center to track your application progress.
Stop using laminated paper copies. UIDAI now issues a secure, weather-proof PVC Aadhaar Card that fits in your wallet like an ATM card.
If you lost your card and don't remember your 12-digit number, do not enroll again. You can recover it online in minutes.
Biometric updates (Photo/Fingerprints) and Mobile linking require a physical visit. Book a slot to save time.
| Form Name | Target Audience | Purpose |
|---|---|---|
| Form 1 | Adults (18+ Years) | New Enrollment or Updating existing details (Name, Address, DoB). |
| Form 2 | NRI Adults | For NRIs with an address outside India. (Requires Passport). |
| Form 3 | Children (5 - 18 Years) | Mandatory Biometric Update (at age 5 & 15) or general updates. |
| Form 4 | NRI Children (5-18) | For NRI kids with an address outside India. |
| Form 5 | Children (0 - 5 Years) | Enrollment for Newborns/Toddlers(Baal Aadhaar).No biometrics required. |
| Form 6 | NRI Children (0-5) | For NRI newborns/toddlers with an address outside India. |
| Service | Description |
|---|---|
| A. Download Aadhaar (e-Aadhaar) | Digitally signed and valid under IT Act. Use "Masked Aadhaar" (last 4 digits) for hotel check-ins to protect privacy. |
| B. Retrieve EID / Aadhaar | Retrieve lost EID/UID via name and registered mobile number/email. |
| C. Verify Email/Mobile | Check if your contact info is verified with official records. |
UIDAI mandates re-verifying POI/POA if Aadhaar was issued over 10 years ago.
The Aadhaar PVC Card is a durable, weather-proof official version with high-end security features:
| Secure QR Code | 3D Hologram | Micro Text |
| Ghost Image | Guilloche Pattern | Embossed Aadhaar Logo |
| Type | Age | Details |
|---|---|---|
| Blue Aadhaar | 0 to 5 Years | No biometrics captured; linked to parent. |
| Mandatory Update | At 5 & 15 Years | Full biometrics required. FREE of cost. |
Prevents misuse. When locked, authentication fails with error "330 - Biometrics Locked." Use the MyAadhaar portal to unlock temporarily for 10 minutes or permanently.
Book via appointments.uidai.gov.in to avoid queues. Aadhaar Seva Kendras (ASK) offer superior infrastructure and token systems.
An AI-based chatbot on the UIDAI site supporting multiple regional languages. Use it to check status or track PVC delivery.
Mandatory for tax purposes. If not linked, PAN becomes inoperative and higher TDS rates apply. A late fee of ₹1,000 applies.
Allows banking (Withdrawal, Deposit, Statements) via Bank Name, Aadhaar Number, and Fingerprint at PoS machines. Safety Tip: Lock biometrics if not using AePS.
| Category | Documents |
|---|---|
| Identity (PoI) | Passport, PAN, Voter ID, Driving License, UDID Card. |
| Address (PoA) | Bank Passbook, Bills (<3 mo), Rent Agreement, Property Tax Receipt. |
| Birth (DoB) | Birth Certificate, Passport, Marksheet, PPO. |
| Toll-Free: | 1947 (12 languages) |
| Email: | [email protected] |
| Public Portal: | pgportal.gov.in |
Concern: With Aadhaar linked to bank accounts, many fear that sharing the 12-digit number makes them vulnerable to theft.
Answer: Just knowing your Aadhaar number is NOT enough to hack your bank account. A financial transaction requires a second layer of authentication—either your OTP (sent to your phone) or your Biometrics (fingerprint/iris).
Concern: Users are locked out of the MyAadhaar portal because they no longer possess the SIM card linked to their Aadhaar.
Answer: No. You cannot update your mobile number online. This is a strict security measure to prevent identity theft.
Solution: You must physically visit the nearest Aadhaar Enrollment Center. You do not need documents to update your mobile number; only carry your Aadhaar card. Update takes 24-48 hours.
The Answer: UIDAI has strict lifetime limits on demographic updates:
| Name | Max 2 times |
| Gender | Only 1 time |
| Date of Birth | Only 1 time |
The Solution for Limit Exceeded: You must visit a UIDAI Regional Office in person with valid proofs and apply through the "Exception Handling Process."
Answer: Simply giving your Aadhaar copy to the bank is not enough. You must specifically request the bank to "Map Aadhaar to NPCI" (National Payments Corporation of India).
Solution: Visit your bank branch and submit a "DBT Mandate Form." Government money only goes to the bank account mapped with NPCI.
Answer: Yes, Aadhaar can be deactivated if biometrics are not updated for children, or if mixed biometrics are detected.
Solution: Use the "Verify Aadhaar" service on the UIDAI website. Enter your number; if it shows a green tick, your Aadhaar is active.