Digital signage are electronic displays that are installed in public spaces. Digital signs are typically used to entertain, inform or advertise. Major benefits of digital signs over traditional static signs are that the content can be exchanged without effort, animations can be shown, the signs can adapt to the context and audience, and even be interactive. Digital signage advertising is a form of out-of-home advertising in which content and messages are displayed on digital signs, typically with the goal of delivering targeted messages to specific locations at specific times. Digital signage offers superior return on investment compared to traditional printed signs.