Wisconsin Statutes Criminal Procedure (Ch. 967 to 980) § 968.37. Assistance in the installation and use of a pen register or trap and trace device

(1) Upon the request of the attorney general, a district attorney or an officer of a law enforcement agency authorized to install and use a pen register under ss. 968.28 to 968.37, a provider of wire or electronic communication service, landlord, custodian or other person shall furnish the investigative or law enforcement officer forthwith all information, facilities and technical assistance necessary to accomplish the installation of the pen register unobtrusively and with a minimum of interference with the services that the person so ordered by the court accords the party with respect to whom the installation and use is to take place, if the assistance is directed by a court order under s. 968.36(5)(b).

(2) Upon the request of the attorney general, a district attorney or an officer of a law enforcement agency authorized to receive the results of a trap and trace device under ss. 968.28 to 968.37, a provider of a wire or electronic communication service, landlord, custodian or other person shall install the device forthwith on the appropriate line and shall furnish the investigative or law enforcement officer all additional information, facilities and technical assistance including installation and operation of the device unobtrusively and with a minimum of interference with the services that the person so ordered by the court accords the party with respect to whom the installation and use is to take place, if the installation and assistance is directed by a court order under s. 968.36(5)(b). Unless otherwise ordered by the court, the results of the trap and trace device shall be furnished to the officer of a law enforcement agency, designated by the court, at reasonable intervals during regular business hours for the duration of the order.

(3) A provider of a wire or electronic communication service, landlord, custodian or other person who furnishes facilities or technical assistance under this section shall be reasonably compensated for the reasonable expenses incurred in providing the facilities and assistance.

(4) No cause of action may lie in any court against any provider of a wire or electronic communication service, its officers, employees or agents or other specified persons for providing information, facilities or assistance in accordance with the terms of a court order under s. 968.36.

(5) A good faith reliance on a court order, a legislative authorization or a statutory authorization is a complete defense against any civil or criminal action brought under ss. 968.28 to 968.37.