Tax payers can use Aadhaar based e-verification of their Income Tax Returns (ITR) for making ITR filing easier and quicker, informed UIDAI on it's official twitter handle. UIDAI (Unique Identification Authority Of India) is mandated to issue an easily verifiable 12 digit random number as Unique Identity - Aadhaar to all residents of India, as mentioned on the official website of UIDAI. 16.65 crore individuals have verified their PAN (Permanent Account Number) with Aadhaar. They can now also instantly e-verify their income tax return using Aadhaar OTP, the tweet further added. Steps to e-verify Income Tax Returns (ITR) using UIDAI's Aadhaar: 1. Log in to income tax e-filing website (incometaxindiaefiling.gov.in) 2. Click on 'Aadhaar' link from left hand side menu 3.