Maryland Code, Criminal Procedure § 9-124

(a)(1) Any person arrested in this State charged with having committed any crime in another state or alleged to have escaped from confinement, or broken the terms of bail, probation, or parole, may waive the issuance and service of the warrant provided for in §§ 9-107 and 9-108 of this title, and all other procedure incidental to extradition proceedings, by executing or subscribing in the presence of a judge of any court of record within this State a writing that states that the person consents to return to the demanding state.

(2) Before a waiver is executed or subscribed by the person, it shall be the duty of the judge to inform the person of the right to the issuance and service of a warrant of extradition and the right to obtain a writ of habeas corpus as provided in § 9-110 of this title.

(b)(1) If and when a consent has been duly executed, it shall forthwith be forwarded to the office of the Governor of this State and filed therein.

(2) The judge shall:

(c)(1) This section does not limit the rights of the accused person to return voluntarily and without formality to the demanding state.

(2) This waiver procedure is not an exclusive procedure and does not limit the powers, rights, or duties of the officers of the demanding state or of this State.