Approaches for improving the user experience when interacting with touchless displays have been proposed, such as using activation gestures and representing users as avatars in real-time. However, the novelty of such approaches may hinder users’ natural interaction behavior bringing challenges such as ease of use. In this paper, we investigate how the presence of avatars and their configurations, the usage of activation gestures, and the arrangement of interactive tiles in a touchless visual interface impact users’ experience, usability and task performance. We also compare users’ willingness to promote the interaction setup, perceived task difficulty, and time consumed to perform four different tasks in each configuration. We found that using a squared arrangement of elements, adopting activation gestures to trigger actions, and showing a moving avatar, resulted in the highest perceived usability and user experience, also reducing errors, task completion time, and perceived task difficulty. Our findings support the design of interactive displays to ensure high usability and user experience.

User-Centered Evaluation of Different Configurations of a Touchless Gestural Interface for Interactive Displays / V. Gentile, H. Farzand, S. Bonaccorso, D. Rocchesso, A. Malizia, M. Khamis, S. Sorce (LECTURE NOTES IN COMPUTER SCIENCE). - In: Human-Computer Interaction – INTERACT 2023 / [a cura di] J.A. Nocera, M.K. Lárusdóttir, H. Petrie, A. Piccinno, M. Winckler. - [s.l] : Springer, 2023. - ISBN 978-3-031-42279-9. - pp. 501-520 (( Intervento presentato al 19. convegno FIP TC13 International Conference tenutosi a York nel 2023 [10.1007/978-3-031-42280-5_32].

User-Centered Evaluation of Different Configurations of a Touchless Gestural Interface for Interactive Displays

D. Rocchesso;
2023

Abstract

Approaches for improving the user experience when interacting with touchless displays have been proposed, such as using activation gestures and representing users as avatars in real-time. However, the novelty of such approaches may hinder users’ natural interaction behavior bringing challenges such as ease of use. In this paper, we investigate how the presence of avatars and their configurations, the usage of activation gestures, and the arrangement of interactive tiles in a touchless visual interface impact users’ experience, usability and task performance. We also compare users’ willingness to promote the interaction setup, perceived task difficulty, and time consumed to perform four different tasks in each configuration. We found that using a squared arrangement of elements, adopting activation gestures to trigger actions, and showing a moving avatar, resulted in the highest perceived usability and user experience, also reducing errors, task completion time, and perceived task difficulty. Our findings support the design of interactive displays to ensure high usability and user experience.
Touchless Gestural Interfaces; Public Displays; Interface Evaluation
Settore INF/01 - Informatica
Settore ING-INF/05 - Sistemi di Elaborazione delle Informazioni
2023
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/1028997
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