N.Y. C.P.L.R. 4539

Rule 4539. Reproductions of original. (a) If any business,\ninstitution, or member of a profession or calling, in the regular course\nof business or activity has made, kept or recorded any writing, entry,\nprint or representation and in the regular course of business has\nrecorded, copied, or reproduced it by any process, including\nreproduction, which accurately reproduces or forms a durable medium for\nreproducing the original, such reproduction, when satisfactorily\nidentified, is as admissible in evidence as the original, whether the\noriginal is in existence or not, and an enlargement or facsimile of such\nreproduction is admissible in evidence if the original reproduction is\nin existence and available for inspection under direction of the court.\nThe introduction of a reproduction does not preclude admission of the\noriginal.\n (b) A reproduction created by any process which stores an image of any\nwriting, entry, print or representation and which does not permit\nadditions, deletions, or changes without leaving a record of such\nadditions, deletions, or changes, when authenticated by competent\ntestimony or affidavit which shall include the manner or method by which\ntampering or degradation of the reproduction is prevented, shall be as\nadmissible in evidence as the original.\n