New York Consolidated Laws, Criminal Procedure Law - CPL § 705.30 Nondisclosure of existence of pen register or a trap and trace device

1. the order be sealed until otherwise ordered by the court;  and

2. the person owning or leasing the line to which the pen register or a trap and trace device is attached, or who has been ordered by the court to provide assistance to the applicant, not disclose the existence of the pen register or trap and trace device or the existence of the investigation to the listed subscriber, or to any other person, unless or until otherwise ordered by the court.