It is unlawful and a violation of the provisions of this chapter for any unauthorized person to deface, injure, tamper with, open or willfully break, destroy, or impair the usefulness of any parking meters installed under the provisions of this chapter. (Ord. 2670 § 1, 1996; Ord. 1867 § 2, 1979; Ord. 973 § 1, 1966; prior code § 19.17.5).