by Jörg Müller, Daniel Michelis, Chris Kray
Position Paper, Workshop Natural User Interfaces, CHI 2010
Abstract
One major application area of Natural User Interfaces are public displays, which are often not intended to help the user fulfill a certain task, but rather to be engaging, inspiring and entertaining. A key issue in this area is how to evaluate these systems and their user interfaces. Based on the case study of Magical Mirrors, we identify challenges that occur with evaluating such systems and propose ways to address these evaluation challenges. Challenges include the lack of a welldefined task, the difficulty of describing and observing audience behavior, the briefness and sparseness of typical interactions, and the public nature of the space.
Introduction
Public Displays are by definition provided for a very broad user base, many of whom will not have encountered the display before. For such situations, Natural User Interfaces (NUIs), which aim to be learnable very quickly, are ideally suited. Such NUIs can involve touch [5] or gestures [4]. Typically, people pass by such displays at a distance, where gestures are well suited to initiate interaction. Rather than to support the user in a specific task, we argue that the most interesting application of such public displays may be to engage, inspire and entertain the audience. The fun of interaction may be an end in itself. We deployed Magical Mirrors, a set of public displays where passers-by can interact with gestures, and manually observed how the public interacted with the displays. We report on the challenges we encountered while evaluating the system and indicate ways to address these challenges. Continue reading ‘Evaluating Natural User Interfaces for Public Displays in the Wild’
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