Abstract
Smart home systems increasingly find their way into private households and efforts are being made to integrate lifelike user interfaces (e.g. social robots) to facilitate the interaction with the smart environment. Considering this, the question arises which benefits such embodied user interfaces offer compared to conventional devices. We are presenting a user study within a smart office setting in which 84 participants were either interrupted by a tablet, a non-expressive social robot, or an expressive social robot by being asked to perform tasks regarding their physical well-being. Results show that each type of user interface bears different advantages. While the tablet comes with a significantly higher usability and a lower level of perceived workload, both versions of the social robot outperform the tablet in terms of social perception and the overall evaluation of the interaction. Overall, the results provide valuable insights informing designers of smart environments which device to choose to enhance certain aspects of the quality of interaction.
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