Md. Code, Criminal Law § 8–613

(a) (1) In this section the following words have the meanings indicated.

(2) “Service” includes the use of telephone or telegraph facilities, gas, electricity, or a musical instrument, phonograph, or other property.

(3) “Vending machine” includes a slot machine, pay telephone, or other receptacle designed to receive United States currency in connection with the sale or use of property or of a service.

(b) A person may not:

(1) operate, cause to be operated, or attempt to operate or cause to be operated a vending machine by a means not lawfully authorized by the owner, lessee, or licensee of the vending machine, including by means of a slug or by counterfeit, mutilated, sweated, or foreign currency;

(2) take, obtain, or receive from or in connection with a vending machine any property or service, without depositing into the vending machine United States currency in the amount required by the owner, lessee, or licensee of the vending machine; or

(3) manufacture for sale, sell, or give away a slug or device that is intended to be deposited in a vending machine if the person:

(i) intends to defraud the owner, lessee, licensee, or other person entitled to the contents of the vending machine; or

(ii) knows that the slug or device is intended for unlawful use.

(c) A person who violates this section is guilty of a misdemeanor and on conviction is subject to imprisonment not exceeding 3 months or a fine not exceeding $500 or both.