Digital Signage is a new media concept, refers to the large shopping malls, supermarkets, hotel lobbies, restaurants, cinemas and other people gathered in public places, by big-screen terminal display device, information publishing business, financial and entertainment multimedia professional a/v system. Its aimed at a specific physical location, specific time periods to specific groups of people playing characteristics of ad information, gives the advertising effect. In other countries, it was also par with paper media, radio, television and the Internet, called the "fifth media"