DexteriSync: A Hand Thermal I/O Exoskeleton for Morphing Finger Dexterity Experience

Skin temperature is an important physiological factor for human hand dexterity. Leveraging this feature, we engineered an exoskeleton, called DexteriSync, that can dynamically adjust the user's fnger dexterity and induce diferent thermal perceptions by modulating fnger skin temperature. This exoskeleton comprises fexible silicone-copper tube segments, 3D-printed fnger sockets, a 3D-printed palm base, a pump system, and a water temperature control with a storage unit. By realising an embodied experience of compromised dexterity, DexteriSync can help product designers understand the lived experience of compromised hand dexterity, such as that of the elderly and/or neurodivergent users, when designing daily necessities for them. We validated DexteriSync via a technical evaluation and two user studies, demonstrating that it can change skin temperature, dexterity, and thermal perception. An exploratory session with design students and an autistic compromised dexterity individual, demonstrated the exoskeleton provided a more realistic experience compared to video education, and allowed them to gain higher confdence in their designs. The results advocated for the efcacy of experiencing embodied compromised fnger dexterity, which can promote an understanding of the related physical challenges and lead to a more persuasive design for assistive tools.