Law of Evidence

If a person against whom an ordinary document is used denies the handwriting, signature, seal, or fingerprint attributed to him or his successor or agent denies the same or claims ignorance thereof, and the adverse litigant asserts the validity of the document and the document is material to the case but the facts and documents of the case are not sufficient to convince the court of the validity of the handwriting, signature, seal, or fingerprint, the court shall order authentication by comparison or witness testimony, or by both, in accordance with the rules and procedures stipulated in this Law. A testimony shall be heard only to establish whether or not the handwriting, signature, seal, or fingerprint on the document in question was made by the person against whom the document is used.