The Illinois Certificate of attorney is a legal document issued by the Illinois Secretary of State. It is used to designate an individual as an attorney-in-fact, or an individual that has the power to make legal decisions on behalf of another person. This document must be filed with the Secretary of State's office and is used to grant legal authority to act on behalf of another. There are two types of Illinois Certificate of attorney: a General Power of Attorney and a Limited Power of Attorney. A General Power of Attorney grants broad powers to the attorney-in-fact and a Limited Power of Attorney grants more specific powers. Both require the signature of both the granter and the attorney-in-fact. The attorney-in-fact must also provide proof of their identity and address. The Illinois Certificate of attorney is an important document that should be kept in a safe and secure place.