The taking of an acknowledgment consists of positively identifying the signer of a document. An Illinois notary acknowledgment form is a written authentication from a notary that the signature on a document belongs to the signer.An Illinois notary acknowledgment form certifies the authenticity of signatures inscribed on a legal document. This file provides a detailed template for a notarial certificate used for acknowledging signatures. An acknowledgment is one of the most common types of notarial acts, but it often confuses Notaries. Here are 5 steps to performing an acknowledgment. If you are served on behalf of another person and you are authorized to receive process, you must indicate under your signature your authority. Download a template here. This 5-step guide will teach you how to notarize a document that requires an acknowledgement (the most common notarial act). Learn what an acknowledgement receipt is and how to create one for your business (with a template and two examples).