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CHAPTER 1 1.1 PERVASIVE DISPLAYS AND DIGITAL SIGNAGE No one can have failed to notice the increasing proliferation of digital signage. As hardware costs have decreased, the prevalence of digital displays in public spaces has grown considerably; displays of varying sizes, shapes and forms are now commonly seen in everyday spaces. Train stations and airports often have digital arrival and departure boards (indeed, finding an old-style analog display is more of a challenge), while conference venues and hotel lobbies use digital displays to share information on current and forthcoming events. Displays are also becoming prevalent in public spaces such as city squares and the workplace—replacing traditional notice boards and signage. As compared to many other communications media, digital signage has a number of inter- esting characteristics that makes it extremely popular, especially with advertisers: Push-based distribution. Viewers do not need to make an active decision to access content on a typical digital sign. Rather, the content that is shown is often content that the users themselves would not actively seek out but that others wish them to see—advertisements being of course the canonical example. However, this ability to push information to viewers has applications beyond advertisements—for example in areas
Published: Jan 1, 2014
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