Verify statements for legal matters and business transactions using our Illinois general affidavit form template. Use this form to swear under oath in writing to facts that you personally know.An Affidavit of Identity is a legal document that is used to formally confirm or verify a person's identity. Complete the Affidavit of Identity in the presence of a Secretary of State Driver Services employee. This affidavit form may be used if you are an adult who has assumed responsibility for a pupil and provide the pupil with a fixed, night-. All Illinois Courts must accept these forms. You must complete and submit the aid year specific Citizenship Affidavit form, available on our Forms page.