Maryland Criminal Law Section 10-118

      (a)      Except for a person licensed as an alcoholic beverages licensee under Article 2B of the Code who possesses a keg in the course of that person's business, a person may not knowingly:

            (1)      possess a keg that has not been registered under or does not have a registration form affixed to it as required by Article 2B, § 21-106 of the Code; or

            (2)      remove, alter, or obliterate, or allow to be removed, altered, or obliterated, a registration form that is affixed to a keg.

      (b)      A person may not allow an individual under the age of 21 years to consume any of the contents of a keg purchased by that person.