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Aadhar Card

India has adopted an individual unique identification system which is followed in most of the countries abroad with an intention to cater to all the requirements of people who are residing in India and has named it as Aadhaar or Unique Identification Number (UID). The system enables to provide targeted services to individuals apart from enhancing the safety and security of the nation. 

What is Aadhaar?

Aadhaar is a twelve digit random number issued to the residents of India by the Unique Identification Authority of India after satisfying the verification process as prescribed by the authority.

Any individual in India irrespective of age, gender, may voluntary get enrolled to get an Aadhaar number. Any person who is willing to enroll for the same has to provide minimal demographic and biometric information during the enrollment process. One need not have to pay any fees to get the Aadhaar card done.

Any individual can enroll for Aadhaar only once and after de-duplication only one Aadhaar will be generated as the uniqueness can be achieved only though the process of demographic and biometric de-duplication.

The demographic information in an Aadhaar will include

- Name
- Date of Birth (verified) or Age (as declared)
- Gender
- Residential Address
- Mobile Number
- E mail ID

In case of introducer based enrollment, the following details will be included

- Introducers Name
- Introducers Aadhaar Number

In case of Head of Family based enrollment

- The name of the head of the family
- Relationship and head of family’s Aadhaar number

In case of enrollment of a Child

- Enrollment ID or Aadhaar number of any one parent
- Proof of Relationship (PoR) document

Biometric Information

The following biometric information will be de-duplicated in Aadhaar card and they include

- Ten Fingerprints
- Two Iris Scans
- Facial Photograph

About Aadhaar Number

The Aadhaar number is a verifiable one and it can be done online in a cost-effective way. The numbers are unique in nature and this is done deliberately to eliminate duplication and fake identities. It can be used as a basic or primary identity for securing benefits from various government-run welfare schemes and programmes. Its aim is to effectively deliver service to the required individuals thereby prompting transparency and good governance.

This is the first of its kind in the country wherein a state-of-art digital and online identification card is being provided by the government to all its citizens free of cost. The system has been designed in such a way that it has the potential to change the way the service delivery system functions in the country.

The Aadhar number is bereft of any intelligence and does not demarcate individuals based on religion, caste, creed, income, health, geography and so on. The Aadhar card acts as a proof of identity, but the same cannot be used to confer any right of domicile or citizenship.

Check Aadhar Card Status

After getting the acknowledgement slip, one can check their aadhar card status online as well as on the offline mode. One has to provide their aadhaar enrollment number to track the UIDAI aadhaar status. Follow the below-mentioned steps to check aadhaar card enrollment status online with or without UIDAI aadhar number.

How to check the enrollment status of Aadhaar card using number?

One can check the status of aadhaar online by visiting the online portal of the UIDAI’s official website. One need not have to pay any fees for checking out the aadhaar card status on UIDAI’s official website. Follow the below mentioned steps as given below:

Step 1: Visit the official website of UIDAI (https://uidai.gov.in/)
Step 2: Mouse over My Aadhaar option and click on Check Aadhaar Status option, this will open a new web page.
Step 3: Enter your enrollment ID, date and time of enrollment, security code and click on the check status button, to proceed further.
Step 4: If your aadhar is generated, you will be receiving a message regarding the same to download your e-aadhaar online or you can get it on your registered mobile number.
Step 5: If you are willing to download e-Aadhaar, then click on the Download aadhaar option.
Step 6: In case if you want your Aadhar on mobile, then you can select the option ‘Get Aadhaar on Mobile’.

UIDAI Aadhaar Update

The process of updating aadhaar has been simplified by the UIDAI to help the people to correct the information in the aadhaar card both via online as well as offline version. Check the steps for updating or correcting the UIDAI aadhaar.

How to Update Aadhaar Card Online?

An individual can change his/her name, gender, date of birth, mobile number, email id on the aadhaar card. One has to follow the below-mentioned steps to update or change or correct the information

Step 1: Visit the Aadhaar Self Service Update Portal
Step 2: If the address proof is valid then click on Update Address or Request for Address Validation Letter.
Step 3: This will open a new page, wherein you have to enter the 12 – digit aadhaar number.
Step 4: Enter the text verification code in the box and click on send OTP or enter TOTP
Step 5: An OTP will be sent to your registered mobile number
Step 6: Enter the OTP number and login to your Aadhar account.
Step 7: One can alternatively use the TOTP feature to authenticate.
Step 8: Proceeding further, tick the address option and click on the submit button.
Step 9: Enter the residential address as mentioned in the Proof of Address and click on the “Submit Update Request” option
Step 10: If you want to modify your residential address, then click on the “Modify” option and proceed further
Step 11: Tick the declaration and click on the “Proceed” button.
Step 12: Select the document type you are willing to submit as the proof of address for verification and upload the scanned copy of the address proof and click on the submit button.
Step 13: Click on the ‘Yes’ button and proceed further and select the BPO service provider that will verify the details and click on the submit button.
Step 14: After this, the BPO service provider will inspect the details provided by you and if it matches with the Proof of Address, then a request will be forwarded to the UIDAI. Your updated request will be accepted and an acknowledgement for the same will be provided to the user.

Note: The Acknowledgment slip contains the Update Request Number (URN). After updating it, users can download the updated version and get a print out of the Aadhar Card.

UIDAI Aadhar Download Online

Indian citizens do require aadhaar card to enjoy the benefits of various central and state government-run schemes which are aimed to provide the subsidy. Aadhaar card which is provided by the UIDAI acts as both proofs of identification and proof of address. Once you enrol yourself for the Aaadhaar at an enrollment centre, you can download the card and print the UIDAI aadhar card by either using Enrollment ID, Virtual ID or Aadhaar number. One has to follow the below-mentioned steps for UIDAI Aadhar Download.

How to Print or Download Aadhar Card Online?

The advancement of the technology has made the UIDAI for electronic storage and retrieval of Aadhaar details. The online version of Aadhaar is known as e-Aadhaar and the same is available in PDF format and this can be downloaded from the UIDAI website.

The e-Aadhar can be accessed via the official UIDAI web portal by using any of the following:

• Using Aadhaar Number
• Using Virtual Identification Form (Virtual ID)
• Using Enrollment Identification Form (Enrollment ID)

How to download e-Aadhaar from the e-Aadhaar link?

Follow the below-mentioned steps to download e-Aadhaar card:

• Individuals who already have an Aadhaar number can enter the 12 digit number. Individuals who are yet to receive their Aadhaar number must note down the enrollment number, time and date which is given in the acknowledgement slip that will be given to them at the time of enrollment of aadhaar application.
• Visit the UIDAI website and enter all the required details to proceed further.
• Click on the option titled, “Get One Time Password” (OTP)
• You will receive OTP or one-time password to your registered mobile number and the same has to be entered into the given field
• Enter the first four letters of your name in capitals combined with the year of birth as the password to open the e-aadhar PDF file.

Features of Aadhaar


The number gives nationwide portability as it can be authenticated anywhere via online across India. This comes in handy for those who migrate from one city to another or from one state to another or from rural areas to urban places and so on.


The process of demography and biometric de-duplication provides uniqueness. The de-duplication process compares the residents biometric and demographic data which will be collected at the time of the enrollment process. As the records of the same will be registered in the UIDAI database. An individual can enrol for Aadhar only one and after de-duplication, only one aadhar will be generated. If in case, if a resident tries to enrol more than once, then the subsequent enrollments will get rejected.

Random Number

The aadhar number is a random number and is devoid of any intelligence. Any person who is willing to enrol for the programme has to provide minimum demographic as well as biometric information during the enrollment process. The process will not capture details related to the income, caste, creed, religion, health, geography and so on.

Open Source Technologies

This feature precludes dependence on specific computer hardware, specific OS, specific storage, specific vendor technologies, specific database vendor to scale. Such applications are built using open source or open technologies and structured to address scalability in a vendor-neutral manner and will allow for co-existence of heterogeneous hardware within the same application.

Scalable Technology Architecture

The UID architecture is scalable and open in nature. The resident’s data is stored centrally and authentication can be done via online from anywhere across the country. The authentication of Aadhaar is built to handle 100 million authentications a day.

Uses of Aadhaar

The Aadhaar card as a platform offers a set of unique opportunity for the government to streamline various set of welfare delivery activities and thereby ensure transparency and good governance.

• It enables elimination of duplication under various welfare schemes
• It has managed to generate substantial savings to the government exchequer
• It provides the government with actual data on beneficiaries
• It ensures that the direct benefit programmes reach out to the actual beneficiaries
• It allows government departments or service providers to coordinate and optimize various schemes.
• It helps to curb leakages through targeted delivery systems
• It improves the efficiency and efficacy of the service delivery mechanism
• It provides a single source offline or online identity verification which can be checked for across the country.
• It helps in eliminating hassles of repeatedly providing supporting identity documents every time to access benefits, subsidies, services and so on.

How to Enroll for Aadhaar Card?

The Aadhaar enrollment process includes the following procedure

  • Visiting the nearest enrollment centre
  • Duly fill in the application form
  • Getting the demographic and biometric data captured
  • Submitting the proof of identity and residential address documents
  • Collecting the enrollment acknowledgement slips which contains the enrollment id
  • Issue of Aadhaar Card
  • Dispatch of Aadhaar to the residential address of the applicant

Visiting the nearest enrollment centre

The first and foremost step is to check for the nearest aadhaar enrollment centre. Locate the nearest ones and then go to the enrollment centre which is authorised by the UIDAI. One can locate the centre using the online portal of the UIDAI. One has to carry the necessary documents (identity proofs) along with proof of residential address where ever they are residing to the authorized centre. Any individual can get enrolled for aadhar only once, as multiple enrollments will get rejected until it is advised by the UIDAI. 

Duly fill in the application form

The second step is to fill in the application form for the purpose of enrolling Aadhaar card. The form is available free of cost and the individual has to fill up the entire form. The form can be found even on the internet and the same can be downloaded and filled in after taking a print out. After filling in the form, submit the same at the enrollment centre in this way you can save time.

Getting the demographic and biometric data captured

Post submission of the form, the process of enrollment takes place. In this method, the photograph, fingerprint scan and the iris scan of the individual will be taken. This is one of the most important procedure during enrollment of Aadhaar.

Submitting the proof of identity and residential address documents

Submit all the important documents like PAN Card, Residential address proof, date of birth proof, ration card, election id card, utility bills and any other relevant documents to verify the same. Ensure you double check all the provided details in the form and make the required rectifications, if any to avoid discrepancies later.

Collecting the enrollment acknowledgement slips which contains the enrollment id

After the completion of the enrollment procedure, the applicant will receive an acknowledgement slip which works till the time the individual receives the original Aadhaar Card Copy. The slip will contain all the details related to the enrollment number that can be used to check the status of Aadhaar card online as well as through IVR.

Issue of Aadhaar Card

All the data provided by the individual has to be verified by the Central government agency UIDAI and only upon proper verification, the Aadhar Card will be issued to the individual.

Dispatch of Aadhaar to the residential address of the applicant

Upon the successful verification of the Aadhaar, the applicant will receive an SMS or a notification via e-mail. In the next few days, the Aadhaar number will get printed on the aadhar card and the same is sent via post to the individual's residential address. The waiting time for aadhar will vary anywhere between 60 – 90 days after the receipt of the resident's data packets at the central identities data repository (CIDR). 

Approaches for Enrollment of Aadhaar

There are three ways through which an individual can enrol for Aadhar. They are

  • Document-Based
  • Head of Family-Based
  • Introducer Based


In case of a document-based approach, one will have to submit one valid proof of identity document and one valid proof of residential address document to obtain aadhaar card.

Head of Family-Based

Under the Head of Family-based approach, the head of the family may introduce their respective family members by means of providing required documents which establish the Proof of Relationship.

Introducer Based

In case of the absence of valid proof of identification document and a valid proof of address document, an introducer’s service can be leveraged. An introducer is generally a person who is appointed by the Registrar and should have a valid Aadhaar number.

Baal Aadhaar

This is meant for minor applicants who are aged below 5 years.

The procedure for getting Baal Aadhaar is listed below:

After submitting the duly filled in aadhar form along with the birth certificate and a copy of parents aadhar details. The parent's biometric details will be captured. On completion of 15th birthday, the child can visit the aadhaar enrollment centre to update his/her biometric data.


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