All cards with concealed preprinted numbers or symbols are to be sold only during the operation of a bingo game, and it shall be the responsibility of the game’s operators to ensure that such cards remain on the premises at all times. Any sale or transport of said cards to the bingo operator may be accepted only by United States mails from out of the state of California. These cards shall not be used in any manner so as to violate any of the provisions of Section 330b of the Penal Code. (Ord. 2021-01 § 1 (Exh. A), 2021)