; (B) an element of the intelligence community; or (C) acting as an agent thereof. (4) Protective services (A) In general Subsection (a)(1) shall not apply to the use of a cell-site simulator in the performance of protective duties pursuant to section 3056 of this title or as otherwise authorized by law. (B) Prohibition on use as evidence No information acquired through the use of a cell-site simulator under the authority under subparagraph (A), and no evidence derived therefrom, may be used, received in evidence, or otherwise disseminated in any investigation, trial, hearing, or other proceeding by, in, or before any court, grand jury, department, officer, agency, regulatory body, legislative committee, or other authority of the United States, a State, or a political subdivision thereof. (C) No bar to other authorized use Nothing in subparagraph (A) or (B) shall be construed to prohibit the United States Secret Service from using a cell-site simulator in accordance with a provision of this section other than subparagraph (A). (5) Contraband interdiction by correctional facilities Subsection (a)(1) shall not apply to the use of a contraband interdiction system if the correctional facility or the entity operating the contraband interdiction system for the benefit of the correctional facility— (A) has— (i) taken reasonable steps to restrict transmissions by the contraband interdiction system to cellular devices physically located within the property of the correctional facility; (ii) posted signs around the correctional facility informing visitors and staff that the correctional facility employs such a contraband interdiction system; and (iii) complied with any relevant regulations promulgated by the Federal Communications Commission and, as applicable, policies issued by the National Telecommunications and Information Administration; (B) annually tests and evaluates compliance with subparagraph (A) in accordance with best practices, which shall be issued by the Federal Communications Commission