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The Ultimate Guide to Aadhaar: What is it, features, benefits, FAQs, etc.

If you haven’t yet linked your Aadhaar card to various financial services, don’t worry. India’s Supreme Court has indefinitely extended the time to bind pending judgments on various Adar petitions. However, there are some services that Aadhaar must be linked with in order to continue to enjoy the benefits of the program.

This guide will give you everything you need to know about Aadhaar. Let’s get straight to the point.

What is Aadhaar?

Aadhaar is a unique 12 digit code assigned to each applicant by UIDAI (Unique Identification Authority of India). A 12-digit code is randomly generated. Every resident of India can voluntarily apply and register for her Aadhaar card regardless of age, gender or place of residence.

Persons wishing to enroll in the Aadhaar Card are required to provide certain demographic and biometric information during the enrollment process. Application to Aadhaar is completely free for all applicants.Aadhaar card can only be applied for once per person. The system is designed so that one person cannot have more than one of her Aadhaar numbers.

What details did you require before enrolling in Aadhaar?
During Aadhaar enrolment, the applicant has to provide the following information:
Demographic Information
  • Name
  • Date of Birth (verified) or Declared Age
  • Gender
  • Resident Address
  • Mobile Number (optional)
  • Email ID (optional)
In the case of the person applying for Aadhaar based on the introducer, he/she has to provide the following additional information:
  • Introducer’s name
  • Introducer’s Aadhaar number
In the case of the person applying for Aadhaar based on the head of the family, he/she has to provide the following additional information:
  • Name of head of the family
  • Relationship to the head of the family
  • Aadhaar number of the head of the family
Children have to submit the following additional documents:
  • Aadhaar ID or enrolment ID of anyone parent
  • Proof of Relationship document (birth certificate, etc.)
Biometric Data
This includes:
  • Two iris scans
  • Ten fingerprints
  • Facial photograph

Key Features of Aadhaar


Aadhaar is unique. No two people will be assigned the same 12-digit Aadhaar code. Aadhaar’s uniqueness is achieved through a process of biometrics and demographic deduplication.

During the deduplication process, the applicant’s demographic and biometric information is matched against data stored in the UIDAI database. Check if the resident is already registered in our extensive database. Everyone only needs to register once with Aadhaar. If the individual tries to register again, the deduplication process will prevent that individual from being issued another Her Aadhaar. All registrations after the first registration will be rejected.


This is another unique feature of Aadhaar. It can be verified and authenticated  anywhere in India. This makes it easy to authenticate online. This is a very important feature as millions of Indians in the country move from one state to another for work, higher education, travel,etc

Random Number

Aadhaar numbers contain no information other than the cardholder’s basic demographic and biometric data. Other details such as religion, caste, health status, income level,& geography are not recorded.

Scalable and Sophisticated Technology

The UID (Unique Identity) generated by Aadhaar is based on a scalable and open architecture. Resident data is stored centrally in the system and can be authenticated within minutes from anywhere in the country. Aadhaar Authentication Service can handle over 100 million authentications per day.

Reliable and Trustable Open Source Technologies

Aadhaar does not use its own system. It is based on an open-source architecture that is not tied to any particular computer hardware, database vendor,operating system, memory,or other vendor-specific technology. The entire system is based on open source technology that is vendor neutral and can reliably handle scalability

How to enrol for an Aadhaar card?

All applicants are required to visit the Aadhaar Enrollment Center to begin the process. This includes completing registration forms, submitting demographic,and biometric data, and providing proof of identity & address. As soon as you submit all your details, you will receive a confirmation letter with your EID. The Aadhaar card created for you will be mailed to your home address.

Key features of Aadhaar enrolment:

  • It’s free. There is no need to pay any fees for the signup process or for issuance of the Aadhaar card.
  • Individuals can visit any licensed Aadhaar Enrollment Center in India to initiate the application process. There is no need to visit your local registration center. You can use the center that suits you.
  • You must bring your ID and proof of address. UIDAI accepts a wide range of poi and plan documents. Commonly accepted documents include passports, driver’s licenses, ration cards, voter photo IDs,etc. You can submit your government-issued photo ID card, such as his ID card or PAN card, as proof of identity. You can submit landline bills, utility bills, and water bills for the past three months as proof of address.
  • If you do not have a regular ID, a photo ID issued by Tehsildar/Gazetteer is also acceptable. A family member can apply for an Aadhaar card even if they do not have separate documents to submit to PoI/PoA. In this case, the head of household must first register with her Aadhaar with valid PoI and PoA documents. Once the head of household receives her Aadhaar card, the head of household can register other family members using her Aadhaar number and supporting documents.
  • If the documents are not available, the resident can also contact the registrant at the registration center when registering for her Aadhaar.

To summarize it, there are:

Three ways to sign up for Aadhaar:-

  • Use of valid documents to prove identity& address,
  • Family Based Enrollment Officer,
  • importer based,

When will I receive my Aadhaar card?

It usually takes about 60-90 days after registration to receive the Aadhaar. The generated Aadhaar card will be sent to your home address. Make sure to keep your EID until you receive your Aadhaar card.

Where to enroll for an Aadhaar card?

RGI (Registration General Authority of India) andUIDAI (Unique Identification Authority of India) have established various registration centers in the country. These include permanent registration centers and special Aadhaar camps.

To find a registration center near you,please visit the UIDAI official website.

Required Documents for an Aadhaar Card:

When applying for different financial products including credit cards, loans, fixed deposits, and savings accounts, the Aadhaar card functions as both an address and an identification document. Documentation is also required if you have already registered with Aadhaar but need to make certain changes to your existing details.

  • Identification document (must have name and photo).
  • A document that proves your address (must show your name and address). Birth date document.
  • Documents proving kinship (must include details of the head of the family). 

The original copies of the papers you wish to submit must be provided by you. These papers will be scanned, then sent. Photocopies don’t need to be printed and submitted.

Documents Serving as Proof of Identity (POI) -Name and Photo

Any of the following documents will be recognised as proof of identification:

  • Card PAN.
  • Passport.
  • Election ID.
  • Ration Card/PDS Photo Card.
  • Driving Permit.
  • Service issued by PSU Government-issued photo identification card.
  • Photo ID card issued by an accredited educational institution.
  • Jobs NREGS Card.
  • Arms Permit.
  • Image Credit Card.
  • Photo ATM card for a bank.
  • Liberation Army Photo Card.
  • Senior Citizen Photo Card.
  • Passbook for Kissan photos.
  • Address Cards with name and photo were distributed by the Department of Posts.
  • Photo Card for ECHS/CGHS.
  • A Tehsildar or Gazetted Officer will issue you a certificate of identity with a photo on letterhead.
  • The government or administrations of the state or a union territory issue a disability ID card or a disabled medical certificate.
  • Card of Bhamashah.
  • A letterhead-based Certificate of Identity with a photograph is issued by an MLA, MLC, MP, or municipal councillor.
Aadhaar Card Proof of Address (POA) Documents with Name and Address:

The following records are acceptable as address proof:

  • Passport.
  • Bank statement and passbook.
  • Election ID.
  • Passbook/statement of the post office account.
  • Service issued by PSU Government-issued photo identification card.
  • (Released in the last three months) Water bill.
  • (Released during the last three months) Electricity Bill.
  • Bill for gas connection (issued during the last three months).
  • Student ID

Q1- What are the benefits of having an Aadhaar card?

A- Millions of people who move around the country are made mobile thanks to the Aadhaar system, which offers a portable form of identification that can be validated online at any time and from any location.

Q2-Is having an Aadhaar card required?

A-The ideal KYC document for Aadhaar is for other banking services. If you don’t want to submit your Aadhaar, you can use any other legally recognised documents that the Reserve Bank of India has approved.

Q3- Is there a minimum age requirement to enroll in Aadhaar?

A-No,there is no set minimum age to enroll in Aadhaar. A newborn child can enroll in Aadhaar as well.

Q4- How to enroll for an new aadhaar card?

A- Enrollment in Aadhaar is free of charge. Any authorised Aadhaar enrollment centre in India is where you can go to enroll in Aadhaar if you have the proper identification and address documentation.

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