Md. Code, Business Regulation § 13–101

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

(b) (1) “Trading stamp” means a stamp or other similar device issued in connection with the retail sale of goods or services, as a cash discount or for any other marketing purpose, that is redeemable for cash, goods, or services.

(2) “Trading stamp” does not include a redeemable device that:

(i) a manufacturer or packer of an article uses to advertise or sell the article; or

(ii) a magazine, newspaper, or other publication issues and redeems.

(c) “Trading stamp company” means a person who, in any way:

(1) distributes trading stamps for retail issuance by others; or

(2) redeems trading stamps for retailers.