Aadhaar Card

Aadhaar Card acts as a universal identity document of the residents of India. Essentially, it is a unique identification document issued by the Unique Identification Authority of India (UIDAI). It contains a 12-digit unique identification number known as the Aadhaar number, along with the holder’s demographic and biometric information.


For security measures, the system is based on biometric authentication (fingerprint and iris scans). According to the authorities, the bio authentication further helps in minimizing the risk of identity fraud. Despite concerns about privacy and data security, Aadhaar has gradually become an integral part of India’s digital infra.


The Aadhaar Card also facilitates access to various government and private sector services across the country. The identification document is commonly used for opening bank accounts, obtaining mobile connections, receiving government subsidies and participating in welfare schemes, among other things.


Key Points about Aadhaar:



  • Unique Identification Number: Each Aadhaar number is unique and is assigned to every resident of India, regardless of age or citizenship. It is based on demographic and biometric information.

  • Biometric and Demographic Data: Aadhaar captures an individual’s biometric data, including fingerprints and iris scans, as well as demographic information such as name, date of birth, gender, and address.

  • Aadhaar Enrollment: Aadhaar enrollment is a voluntary process. Individuals can visit Aadhaar enrollment centers to provide their biometric and demographic details for Aadhaar registration.

  • Linking Aadhaar: The Indian government has mandated the linking of Aadhaar with various services and documents, including bank accounts, mobile numbers, PAN (Permanent Account Number) cards, and government welfare schemes.

  • Aadhaar Authentication: Aadhaar authentication allows individuals to confirm their identity by providing their Aadhaar number and biometric data. It is commonly used for verification in various sectors, including finance, telecommunications, and government services.

  • E-Aadhaar: After Aadhaar enrollment, individuals can download an electronic version of their Aadhaar card called E-Aadhaar. It is a password-protected PDF file containing the same information as the physical Aadhaar card.

  • Aadhaar for Government Subsidies and Services: Aadhaar is used to streamline the distribution of government subsidies and services, ensuring efficient delivery to the intended beneficiaries. It is widely used in schemes such as the Public Distribution System (PDS) for food grains and the Direct Benefit Transfer (DBT) for various subsidies.

  • Data Security and Privacy: UIDAI, the governing body of Aadhaar, has implemented stringent security measures to protect Aadhaar data and ensure the privacy of individuals. Various regulations and protocols are in place to safeguard Aadhaar information.

  • Aadhaar for Children: Aadhaar can be obtained for children as well. Parents or legal guardians can enroll their children for Aadhaar, and biometric updates can be done when the child reaches the age of 5 and 15 years.


You can also use the mAadhaar app to check your Aadhaar card details on your mobile device. To use the app, you need to download and install it on your smartphone and enter your Aadhaar number and OTP to create a profile. Once you create a profile, you can view your Aadhaar card details, update your profile, and use various Aadhaar-related services.


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Aadhaar Card is a unique identification card issued by the Indian government to its citizens. The card contains a 12-digit unique identification number that is linked to an individual’s biometric and demographic information. The Aadhaar card serves as a proof of identity and address for an individual.

Enrollment number is a 28-digit unique number assigned to an individual during the Aadhaar enrollment process. It is used to track the status of the Aadhaar card application until the card is issued.

To check your Aadhaar card, you can visit the official UIDAI (Unique Identification Authority of India) website and click on the ‘Download Aadhaar’ option. You will need to enter your Aadhaar number or enrollment number, along with other details such as name, pin code, and image captcha to download the Aadhaar card.

To check the link between your Aadhaar card and PAN card, you can visit the official website of the Income Tax Department and click on the ‘Link Aadhaar’ option under the ‘Quick Links’ section. You will need to enter your PAN number, Aadhaar number, and name as per Aadhaar card to check the linking status.

To download your Aadhaar card PDF online, you can visit the official UIDAI website and enter your Aadhaar number or enrollment number, along with other details such as name, pin code, and image captcha. Once the details are verified, you can download the Aadhaar card in PDF format.

To check your Aadhaar card details, you can visit the official UIDAI website and click on the ‘Download Aadhaar’ option. You will need to enter your Aadhaar number or enrollment number, along with other details such as name, pin code, and image captcha to download the Aadhaar card. The card will contain all the demographic and biometric details linked to your Aadhaar number.

To check your Aadhaar card status by enrollment, you can visit the official UIDAI website and click on the ‘Check Aadhaar Status’ option under the ‘My Aadhaar’ section. You will need to enter your enrollment number, date and time of enrollment, and image captcha to check the status of your Aadhaar card.

To download your e-Aadhaar card, you can visit the official UIDAI website and click on the ‘Download Aadhaar’ option. You will need to enter your Aadhaar number or enrollment number, along with other details such as name, pin code, and image captcha to download the Aadhaar card. You can download the e-Aadhaar card in PDF format, and it can be used as a valid identity proof.

To change your Aadhaar mobile number, you can visit the official UIDAI website and click on the ‘Update Aadhaar Details’ option under the ‘My Aadhaar’ section. You will need to enter your Aadhaar number and OTP received on your registered mobile number. Then you can update your mobile number by following the instructions given on the website.

To check your Aadhaar card without a mobile number, you can visit the official UIDAI website and click on the ‘Get Aadhaar’ option under the ‘My Aadhaar’ section. You will need to enter your enrollment number, along with other details such as name, pin code, and image captcha to download the Aadhaar card.

To check your Aadhaar card linking status with your mobile number, you can visit the official UIDAI website and click on the ‘Verify Email/Mobile Number’ option under the ‘My Aadhaar’ section. You will need to enter your Aadhaar number, mobile number, and image captcha to check the linking status.

To download your Aadhaar card with a 14-digit enrollment number, you can follow these steps:

Step 1: Visit the official UIDAI website at uidai.gov.in.
Step 2: Click on the “Download Aadhaar” option under the “Get Aadhaar” section.
Step 3: Select the “Enrollment ID” option and enter your 14-digit enrollment number, full name, pin code, and image captcha.
Step 4: Click on “Get One Time Password” to receive an OTP on your registered mobile number.
Step 5: Enter the OTP received and click on “Download Aadhaar” to download your Aadhaar card in PDF format.

To change your Aadhaar card mobile number online without OTP, you can follow these steps:
Step 1: Visit the official UIDAI website at uidai.gov.in.
Step 2: Click on the “Update Aadhaar Details (Online)” option under the “My Aadhaar” section.
Step 3: Enter your Aadhaar number and click on “Send OTP” to receive an OTP on your registered mobile number.
Step 4: Select the “Update Mobile Number” option and enter your new mobile number.
Step 5: Select the checkbox to confirm and click on “Submit”.
Step 6: Enter the OTP received on your new mobile number and click on “Submit” to complete the process.

To download your Aadhaar card without OTP, you can follow these steps:
Step 1: Visit the official UIDAI website at uidai.gov.in.
Step 2: Click on the “Download Aadhaar” option under the “Get Aadhaar” section.
Step 3: Select the “Download Aadhaar without OTP” option.
Step 4: Enter your Aadhaar number or enrollment ID, full name, pin code, and image captcha.
Step 5: Click on “Download Aadhaar” to download your Aadhaar card in PDF format.

To register your mobile number in your Aadhaar card by SMS, you can follow these steps:
Step 1: Type UID and send it to 1947.
Step 2: You will receive an OTP on your registered mobile number.
Step 3: Reply with OTP to complete the process.

There can be several reasons why you are not receiving an OTP on your registered mobile number. It could be due to poor network connectivity, incorrect mobile number registered in your Aadhaar card, or technical issues with the UIDAI server. If the problem persists, you can contact the UIDAI helpline number at 1947 for assistance.

You can make changes in your Aadhaar card information as many times as you want. However, there are limits on the number of times you can update specific details such as your name, date of birth, and gender. You can update your name only twice, while you can update your date of birth and gender only once.

Once you submit your mobile number update request online, it usually takes up to 90 days for the mobile number to get linked to your Aadhaar card. However, the linking process may take longer if there are any discrepancies or errors in the information provided.

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