Abstract
Ultrasound mid-air haptic feedback is a novel output technology that allows users to experience a sense of touch in mid-air on the unadorned palm and fingers of the hand. Even though a growing body of research has studied various aspects of the UX of mid-air haptics, little is known about what happens to the users’ perception and experience after repeated use. The main reason for this is that today, mid-air haptic technology is not easily integrated in everyday devices (e.g. smartphones) nor widespread, making it difficult for it to be tested outside of a lab environment. This chapter describes the set-up of a longitudinal in-lab study, in which a mixed-method design was used to understand how the hedonic, pragmatic and emotional aspects of the UX of mid-air haptics changed over time. In eight sessions, spread over a five-week period, 31 participants interacted with a gesture-controlled home automation system augmented with mid-air haptic feedback. We report in this chapter on our participant recruitment and retention approach, the mixed-method set-up that was used, and (an excerpt of) the main results. Subsequently, we summarize best practices and propose suggestions for researchers who in the future intend to conduct a multimethod longitudinal study.
Published Version
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