anyone who "knowingly uses or attempts to use an audiovisual recording device to transmit or make a copy of a ... protected work... from a performance of such work in a motion picture exhibition facility..." may be imprisoned up to three years for a first time offender, and up to six years for a repeat offender, in addition to any fines that may be levied under the u.s. criminal code for copyright infringement. this could apply to merely taking a cell phone snapshot of a theatre screen.