Multiple user interfaces and cross-platform user experience: Theoretical foundations

Evaluating the user experience of cross-platform interactive systems has become a research issue of increasing importance. There is a lack of clear concepts and definitions for testing, evaluating or even teaching cross-platform user experience. In this paper, we review the actual meanings and interpretations of different concepts in the field of Human-Computer Interaction (HCI) relevant to cross-platform service usage. We also investigate the traditional definitions of usability and user experience before extending them to develop precise definitions for crossplatform usability and user experience. Our paper builds on existing theories to establish the theoretical foundations that can help us better conceptualise cross-platform user experience evaluation.