Aadhaar — Unique Identification Authority of India (UIDAI)
Aadhaar is India’s 12-digit biometric identity system, the world’s largest digital identity programme with over 1.3 billion enrollments. Managed by the Unique Identification Authority of India (UIDAI).
Key Services Available Online
- New Aadhaar enrolment and appointment booking
- Update demographic details — name, address, date of birth, gender, mobile number, email
- Download e-Aadhaar (digitally signed, legally valid PDF)
- Check Aadhaar update status
- Lock/unlock biometrics for security
- Verify Aadhaar number
- Generate VID (Virtual ID — a temporary 16-digit number to use instead of Aadhaar)
Free Document Update Window
UIDAI has extended the free document update facility. You can update name, address, and date of birth online at no charge. This is to encourage citizens to keep their Aadhaar data current. Deadline: September 2026.
📞 Important Contacts
| Toll-Free Helpline | 1947 |
| Email Support | help@uidai.gov.in |
| Grievance Portal | uidai.gov.in/contact-support |
| Official Website | uidai.gov.in |
| mAadhaar App | Available on Google Play and Apple App Store |
⚠️ Important Security Tips
- Never share your Aadhaar OTP with anyone.
- Use Masked Aadhaar (shows only last 4 digits) for non-government services.
- Lock your biometrics when not in use to prevent unauthorised authentication.
- Always verify you are on uidai.gov.in before entering personal information.
Last updated: June 2026. All official services are free of charge.