Signs that see and understand the actions and characteristics of individuals in front of them can deliver numerous benefits to advertisers and viewers alike. Such capabilities were once only practical in research labs and niche applications. But semiconductor price, performance, and power-consumption trends are now making audience analytics, gesture interfaces, augmented reality, and other features feasible for high-volume mainstream deployments. The digital-signage market is one of the brightest stars in today's technology sector, both in replacing legacy static signage in retai and other environments and in expanding the overall market for advertising, information, augmented reality, and other applications. While digital signage has been around for decades in the form of LED-based signs, it has taken off and evolved in recent years due to a variety of factors, including computing technology that is both better and lower cost, and a growing understanding of ROI and content management on the part of deployers. Analyst firm IHS has forecasted that the digital-signage market will reach $17.1 billion bv 2017. from $13.2 billion in 2012.
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