N.Y. Tax Law § 171-K
If any return or report relating to a tax, fee or other imposition administered by the commissioner is authorized by the commissioner to be filed electronically, then such return or report shall be signed electronically consistent with the provisions of article three of the state technology law; provided, however, that if the commissioner determines that electronic signatures that are used by the federal internal revenue service in tax administration are not consistent with the provisions of article three of the state technology law, then the commissioner, after conferring with the office of information technology services, may prescribe the manner and form of electronic signature on any such return or report. Such electronic signature shall conform, to the extent practicable, with electronic signatures that are used by the federal internal revenue service. The use of such an electronic signature shall have the same validity and effect as the use of a signature affixed by hand.
N.Y. Tax Law § 171-K