28 July 2025 in Proceedings of the Human Factors and Ergonomics Society Annual Meeting
With estimates of at least 3.4 million Americans aged 40 years and older facing challenges due to vision impairment, advancements in haptic technology have been explored as an effective alternative approach to provide support in aspects such as accessible navigation. A scoping review was conducted to investigate recent literature on haptic technology used to guide blind or low-vision users to a destination, focusing on 28 articles that were identified using the PRISMA method. Results revealed a focus on the methods of haptic input, specifically the benefits and gaps in hands-free and hand-held devices. Several studies utilized the advantages of employing a multimodal feedback approach with audio to better convey navigation information, while explorations of the performance of different types of haptic feedback were also discussed. Overall, this study provides insights into recent advancements in haptic design, which can assist researchers in improving developments toward inclusive navigation technology for blind or low-vision individuals.
9 October 2026 in Proceedings of the Human Factors and Ergonomics Society Annual Meeting
Mobility disabilities are among the most common disability types in the U.S., where the need to design safe powered mobility devices is increasingly important for user safety. For power wheelchair users, AI-enabled solutions have been introduced to avoid collisions. However, as control shifts from the user to automation, systems need to communicate intent clearly and maintain user trust. Auditory verbal cues can support decision-making: explanations may emphasize action-focused maneuvers or why-focused rationales. Tactile displays can also support communication through vibrations presented to the back or wrist. However, because safety-critical messages based on AI-inferred intent have not been systematically investigated and because power wheelchair users experience a different embodied interaction, there remains an opportunity to understand these factors. This pilot study explored the effects of communication strategy (action-focused, why-focused) and vibrotactile feedback location (seatback, wrist) on wheelchair performance and user perceptions. Six able-bodied participants completed wheelchair driving sessions while receiving obstacle alerts. Results indicated that seatback vibrations were associated with higher satisfaction ratings than wrist vibrations. No significant main effects were found for reaction time, decision-making accuracy, or usefulness ratings. These data can inform future studies designing intelligent wheelchair interfaces.