The description of modern digital signage contains a handful of key ingredients. Most who follow the industry agree these generally include at least:

Digital hardware displaying digital software (in the form of both on-screen content and software control systems), featured on screens that are thin and come in many sizes, offering constantly changing and refreshed content, often shown on many regions of a single screen, capable of delivery instantaneously via satellite and the Internet, from a server or personal computer (PC), close by or on the other side of the globe, intended to be particularly relevant and helpful to consumers aimed largely at out-of-home audiences who are frequently moving from place to place, yet are often held “captive” by a particular situation, event, or environment.