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Chris Kray, Areti Galani, Michael Rohs
Facilitating Opportunistic Interaction with Ambient Displays
Workshop on Designing and Evaluating Mobile Phone-Based Interaction with Public Displays at CHI 2008, Florence, Italy, April 5, 2008 (bib)

Some public display systems provide information that is vital for people in their vicinity (such as departure times at airports and train stations) whereas other screens are more ambient (such as displays providing background information on exhibits in a museum). The question we are discussing in this paper is how to design interaction mechanisms for the latter, in particular how mobile phones can be used to enable opportunistic and leisurely interaction. We present results from an investigation into the use and perception of a public display in a cafÃ©, and we derive some requirements for phone-based interaction with (ambient) public displays. Based on these requirements, we briefly evaluate three different interaction techniques.