N.Y. Gen. Bus. Law § 518-a

§ 518-a. Presentment of social security number as condition for\naccepting a check, traveler's check, gift certificate, money order or\nother negotiable instrument in payment of sales transaction prohibited.\n1. No seller in any sales transaction shall record on a check,\ntraveler's check, gift certificate, money order, other negotiable\ninstrument or attachment thereto, a social security number of a buyer in\nsuch transaction as a condition for accepting such instrument as payment\nin such transaction. Nothing contained in this subdivision shall\nprohibit a seller from so recording the identifying number from a\nbuyer's driver's license where such number is identical to or is a part\nof the buyer's social security number.\n 2. A violation of the provisions of this section shall be punishable\nby a civil fine not to exceed one hundred dollars for a first violation\nand not to exceed two hundred fifty dollars for subsequent violations.\n