There are many ways that Digital Signage could be implemented within a campus. As a Digital Board, in-Campus Channel, or even a Display of schedule for classes and Seminar rooms.
MyClass in Kuwait: http://toshi.com.my/component/content/article/14-digital-signage-news/229-gulf-university-for-science-a-technology-chooses-toshi-electric-sdn-bhd-to-provide-digital-class-schedule-display-solution
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