(a) Every Person to whom a permit shall have been granted pursuant to Health Code Articles 19H or 19N shall post a sign or other notice in the Establishment, stating that in San Francisco it is unlawful to sell Tobacco Products, including smokeless tobacco and electronic cigarettes, to persons who are 18, 19, or 20 years of age. The sign or other notice shall be placed in a conspicuous location in the Establishment, and the letters and numbers on the sign or notice shall be of sufficient size that the message is readily visible to anyone within the Establishment who is considering buying a Tobacco Product. Pursuant to Section 19P.5, the Director may adopt rules, regulations, or guidelines regarding compliance with this Section 19P.4.
(b) The Director, or his or her designee, may enforce this Section 19P.4 pursuant to Articles 19 et seq. of the Health Code, including but not limited to Article 19H.