Usability Testing for Electronic Remote Control Interaction Interface for Smart Home Products

The purpose of this study was to investigate the usability of three high-fidelity interactable prototypes with a stepper control, a slider control, and a picker control, and to suggest design improvements and recommendations. Participants used an Apple mobile phone to complete five tasks related to smart bed angle adjustment. A usability test was used to collect quantitative data (time to complete the tasks and SUS scores), and the results were tested using repeated measures one-way ANOVA. Users’ subjective attitudes and user experiences of the different programmes were also collected through post-test interviews and observations of the experimenters. The final results showed that: (1) The use of shortcut input or one-button direct access in the angle adjustment control can significantly improve the efficiency of user adjustment. (2) Avoiding the display of too many numbers in the adjustment area can improve the intuition of user operation. (3) Introducing multimodal feedback in the process of angle adjustment can help to guide the user, convey key information and state changes, and further enhance the user experience.