Md. Code, Criminal Procedure § 2–507

This subtitle may not be construed to restrict the use of facial recognition technology for the purpose of:

(1) identifying a missing or deceased person or a person who is incapacitated and unable to otherwise provide the person’s own identity;

(2) redacting a recording or an image for release or disclosure to protect the privacy of an individual depicted in a recording or an image;

(3) forensic analysis of electronic media seized by law enforcement in relation to a specific investigation if the person identified in the electronic media is not the subject of criminal charges resulting from the forensic analysis;

(4) enhancing security systems for preventing unauthorized access to information, goods, materials, areas, or other properties under the custody or care of a law enforcement agency; or

(5) conducting otherwise legitimate activity unrelated to a criminal investigation.