A trucking company installed in its terminal audio and video devices behind two-waymirrors in both the men's and women's bathrooms. The purpose of the devices was todetect and prevent drug use among the truckers. The devices were discovered whenone day the mirror fell off of the wall. Are the tactics used by the trucking companylegal because it has a right to restrict drug use? Or is its approach a violation of thetruckers' right to privacy? [Cramer v. Consolidated Freightways Inc. , 255 F. 3d 683(9 th Cir. 2001).]