Billboard hacking

Billboard hacking or billboard hijacking is the practice of altering a billboard without the consent of the owner. It may involve physically pasting new media over the existing image,^[1] or hacking into the system used to control electronic billboard displays. The aim is to replace the programmed video with a different video or image. The replaced media may be displayed for various reasons, including culture jamming, shock value, promotion, activism,^[2] political propaganda,^[3] or simply to amuse viewers.