Learn how to fill out an affidavit correctly with this comprehensive guide. Discover the steps, types, and when you might need an affidavit.Verify statements for legal matters and business transactions using our Illinois general affidavit form template. What do I need first? All application questions must be completed in their entirety, including submission of all required supporting documentation in its complete form. The Easy Form asks you questions and completes the necessary forms with your answers. An Affidavit of Identity is a legal document that is used to formally confirm or verify a person's identity. Fill out, verify and submit this online form. Once it is submitted you will be able to download and print a PDF document with the information you have entered. Enter your complete address, telephone number, and email address, if you have one.