What is Aadhaar?

Aadhaar is a verifiable 12-digit identification number issued by UIDAI (“Authority”) to the resident of India for free of cost after satisfying the verification process laid down by the Authority.
Any individual, irrespective of age and gender, who is a resident of India, may voluntarily enroll to obtain Aadhaar number based on demographic and biometric information.

What is Masked Aadhaar?

Aadhar number is very senstive information by which we can track an individual complete information thats why UIDAI provide both the options for down load Aadhar card.

1) Regular Aadhar Card : All digits visible
2) Masked Aadhar Card : Replacing of first 8 digits of Aadhaar number with some characters like “xxxx-xxxx” while only last 4 digits of the Aadhaar Number are visible.

How to Mask Aadhaar in your web page?

Making aadhar number Replacing of first 8 digits of Aadhaar number with some characters like “xxxx-xxxx” while only last 4 digits of the Aadhaar Number are visible. In web page
aadhar number text box when user click/focus or hover on text box will display regular aadahr number otherwise will display as masked.

See Also :

• Log4j2: How to Mask Logs Personal/Confidential/SPI Information
• How to Mask JSON Confidential/Personal Information in logs :JAVA
• How to mask JAVA Object confidential/personal information in logs while Printing
• How to MASK XML Confidential/Personal Data : JAVA
• How to mask Personal/Confidential Information on web page

Mask Aadhar Number Example

HTML Changes

Create a text box on your page with below html. Refer Attachment

Java Script/JQuery Changes

Copy below java script in your head section of page.

var originalVal;
$(document).ready(function()
{
       if($('#txtAadhar').val().length>0)
		 {
		 if($('#txtAadhar').val().indexOf("X")==-1)
			{
			  originalVal=$('#txtAadhar').val();
			}
		    maskAadhar(this);
		 }

	    $('#txtAadhar').blur( function(e)
		{
	    	if($('#txtAadhar').val().indexOf("X")==-1)
	    	{
	    	  originalVal=$('#txtAadhar').val();
	    	}
	    	 maskAadhar(this);
		});

		$('#txtAadhar').focus( function(e)
		{
			$(this).val(originalVal);
		});
});
function maskAadhar(regularAadhar)
{
	 var varlen =$(regularAadhar).val().length;
	 if(varlen > 12)
	 {
	 $("#error").text('Not Valid Aadhar Number.');
	 }
	 else
	 {
	 $("#error").text('');
	 var str = $(regularAadhar).val();

	 var mask = varlen > 0 ? varlen > 1 ? varlen > 2 ? varlen > 3 ? varlen > 4 ? varlen > 5  ? varlen > 6 ? varlen > 7 ?
	        'XXXX XXXX'
          : 'XXXX XXX'
          : 'XXXX XX'
          : 'XXXX X'
          : 'XXXX'
		  : 'XXX'
		  : 'XX'
		  : 'X'
          : '';
          if (varlen < 9) {
          $(regularAadhar).val(mask);
          } else {
          $(regularAadhar).val(mask +' '+ $(regularAadhar).val().substring(8));
          }
   }
}

Download Source code

To download the source code of this example, click on below given download link. Mask Aadhar Card

References

https://www.uidai.gov.in/my-aadhaar/about-your-aadhaar.html
https://www.uidai.gov.in/283-faqs/aadhaar-online-services/e-aadhaar/1887-what-is-masked-aadhaar.html