N.Y. General Business Law § 518-A
able instrument in payment of sales transaction prohibited. 1. No seller in any sales transaction shall record on a check, traveler's check, gift certificate, money order, other negotiable instrument or attachment thereto, a social security number of a buyer in such transaction as a condition for accepting such instrument as payment in such transaction. Nothing contained in this subdivision shall prohibit a seller from so recording the identifying number from a buyer's driver's license where such number is identical to or is a part of the buyer's social security number.