765 ILCS 33/3: Validity of electronic documents.

(a) If a law requires, as a condition for recording, that a document be an original, be on paper or another tangible medium, or be in writing, the requirement is satisfied by an electronic document satisfying this Act.

(b) If a law requires, as a condition for recording, that a document be signed, the requirement is satisfied by an electronic signature.

(c) A requirement that a document or a signature associated with a document be notarized, acknowledged, verified, witnessed, or made under oath is satisfied if the electronic signature of the person authorized to perform that act, and all other information required to be included, is attached to or logically associated with the document or signature. A physical or electronic image of a stamp, impression, or seal need not accompany an electronic signature.