Md. Code, Business Occupations and Professions § 13–406

(a) The Secretary shall issue to each individual who is certified as a private detective under this subtitle a certification card that identifies the individual as a certified private detective.

(b) (1) Subject to this subsection, the Secretary shall determine the form and content of the certification card.

(2) The certification card shall be of a size and made of materials appropriate for its intended use, as provided under § 13-407 of this subtitle.

(3) The certification card shall contain:

(i) a statement that in substance specifies that the individual is certified by the Secretary as a private detective;

(ii) the name of the licensed private detective agency with or by which the individual is associated or employed; and

(iii) any information that the Secretary considers appropriate to:

1. identify the individual; or

2. specify the authority of the individual.