Maryland Code, Business Occupations and Professions § 19-603

(a) Except as authorized under this title, a security guard agency may not provide any person with a badge or a certification card or other document indicating that any individual is a security guard.

(b) A certified security guard may not lend the security guard's certification card or badge to another person or allow another person to use or display the card or badge.

(c) Regardless of any association that an individual may have with a security guard agency, unless authorized under this title, the individual may not wear or carry a badge that: