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Communication Dans Un Congrès Année : 2023

Eyes-Free Fingertip Guidance Based on Tactile Cues, an Extension of the Steering Law

Quentin Agobert
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Balthazar Potet
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Nicolas Huloux

Résumé

The use of a modern human-machine interface involves a large amount of possible interactions. In order to allow users to navigate through a large number of available operations, interface designers often use drop-down menus that offer many options in a constrained area. This kind of menu shows good performance for selecting quickly from a large amount of choices. However, they require a high visual attention which is not always possible for the user. Here, we investigate if one can navigate through paths made of orthogonal tunnels, simulating drop-down menus, relying only on tactile cues on a haptic touchscreen. We found that subjects were able to follow the path with a success rate of ∼ 90% for 1 tunnel which decreased linearly to ∼ 40% for 5 tunnels. Four types of friction-modulated haptic feedback were tested and showed no major differences in terms of success rate. Nevertheless, participants were slightly faster with slipping path feedback. The user trajectories presented robust regularities that could be well described by the steering law model. Hence, we propose a novel definition of path difficulty for non-visual conditions based on path width, length and number of orthogonal tunnels. These findings pave the way toward eyes-free guidance on surface haptic interfaces.
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Dates et versions

hal-04189877 , version 1 (29-08-2023)

Identifiants

Citer

Quentin Agobert, Corentin Bernard, Balthazar Potet, Nicolas Huloux. Eyes-Free Fingertip Guidance Based on Tactile Cues, an Extension of the Steering Law. 2023 IEEE World Haptics Conference (WHC 2023), Jul 2023, Delft, Netherlands. pp.14-19, ⟨10.1109/WHC56415.2023.10224419⟩. ⟨hal-04189877⟩
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