(A) If a licensee or his or her agents or employees believe or have reason to believe that a sale or delivery of any alcoholic liquor is prohibited because of the age of the prospective recipient, he or she shall, before making the sale or delivery, demand presentation of some form of positive identification, containing proof of age, issued by a public officer in the performance of his or her official duties.
(ILCS Ch. 235, Act 5, § 6-20)
(B) Proof that the defendant/licensee, or his or her employees or agent demanded, was shown, and reasonably relied upon the written evidence in any transaction forbidden by this section is competent evidence and may be considered in any criminal prosecution therefor or in any proceedings for the suspension or revocation of any license based thereon.
(1994 Code, § 21-3-23)