Verifying your tax return with your Aadhaar card

The thing to remember here is that you need to have access to the mobile number you registered with while getting the Aadhaar card. 

If you don't have access to the mobile number, then consider verifying using your Netbanking account or sending your ITR-V.

If you have the access to the mobile number, then read this blog post to verify using your Aadhaar card.