Maryland Code, Courts and Judicial Proceedings § 10-103

(1) “Duplicate” means a counterpart produced by the same impression as the original, or from the same matrix, or by means of photography, including enlargements and miniatures, or by mechanical or electronic rerecording, or by chemical reproduction, or by other equivalent techniques which accurately reproduce the original.

(3) “Photographs” include still photographs, X-ray films, video tapes, and motion pictures.

(4) “Writing” means letters, words, or numbers, or their equivalent, set down by handwriting, typewriting, printing, photostating, photographing, magnetic impulse, mechanical or electronic recording, or other form of data compilation.

(1) A genuine question is raised as to the authenticity of the original; or

(2) Under the circumstances, it would be unfair to admit the duplicate in lieu of the original.