In the U.S. it depends on state laws, and in the absence of any state laws wether you had a reasonable expectation of a right to privacy. If there's a hidden ca

In the U.S. it depends on state laws, and in the absence of any state laws wether you had a reasonable expectation of a right to privacy. If there's a hidden camera on the factory floor, that's probably fair game. If there's a hidden camera in a bathroom stall, that's probably illegal.