After you eFile your taxes, you need to make sure the Income Tax Department knows it's really you who filed them. Here's how: Use a Code: You'll get a special code called the Electronic Verification Code (EVC) to confirm it's you. Aadhaar OTP: If you have an Aadhaar card, you can get a One-Time Password (OTP) sent to your phone. Just enter this OTP online. Digital Signature: This is like an electronic stamp that says yes, it's me.