Digital signage is a name given to any number of methods used to display multimedia content in public spaces. Alternatively known as dynamic signage, electronic signage or narrowcasting, networks of digital signs have been deployed across numerous retail chains, banks, airports, and corporate headquarters to deliver informative and entertaining content to captive audiences and passers by. In its most basic implementation, a digital sign consists of a playback device (such as a computer, VCR, flash or DVD player) connected to a display.

Depending on the application, the display might be a small LCD screen, a large plasma display panel, a rear projection display, or even a video wall composed of a number of connected screens. With a number of affordable options available, anybody with a message to send to their out-of-home audience can benefit from a digital signage installation.