Maryland Criminal Law Section 9-704

      (a)      This section applies to a person possessing an identification badge or identification card required for employment or visitation that is issued by:

            (1)      a unit of the State or a county, municipal corporation, special taxing district, or public corporation of the State; or

            (2)      a person that owns or operates in the State:

                  (i)      a factory or warehouse or a manufacturing, printing, publishing, mechanical, or mercantile establishment or a plant of any kind;

                  (ii)      a mine or quarry;

                  (iii)      a railway; or

                  (iv)      a water, sewage, gas, electric, transmission, heating, refrigerating, telephone, or other publicly owned or public service company.

      (b)      A person shall surrender each identification badge or identification card to its issuer when the person's employment or authorized visit ends.

      (c)      A person may not knowingly possess an identification badge or identification card after the person's employment or authorized visit ends.

      (d)      A person who willfully violates this section is guilty of a misdemeanor and on conviction is subject to imprisonment not exceeding 90 days or a fine not exceeding $500 or both.