Interaction Design of Elderly-Friendly Smartwatches: A Kano-AHP-QFD Theoretical Approach

The world population is aging rapidly, and the health and care issues of the elderly are receiving increasing attention. The application of elderly smart wearable devices, represented by smartwatches, in health monitoring, is becoming more widespread. Based on the above background, a smartwatch interaction design strategy centered on elderly users is proposed to address the problem of low aging adaptability in current smartwatch design. The Kano model, hierarchical analysis method, and QFD method are integrated into the smartwatch interaction design process. Firstly, focusing on elderly users as the target, Kano was used to study user requirements, resulting in 24 user requirements classified by their attributes. Secondly, the AHP model was employed to establish the analysis matrix of the requirement indicators and determine the comprehensive weighting values of different requirement indicators. Subsequently, QFD was utilized to analyze the finalized user requirements, enabling the determination of the core design factors for smartwatch interaction design. Finally, the design scheme was conducted based on the design factors, followed by evaluation and usability testing to verify the reasonableness and feasibility of the design model and scheme.