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

Gentile, V., Farzand, H., Bonaccorso, S., Rocchesso, D., Malizia, A., Khamis, M. and Sorce, S. (2023) User-Centered Evaluation of Different Configurations of a Touchless Gestural Interface for Interactive Displays. In: INTERACT 2023: 19th International Conference of Technical Committee 13 (Human- Computer Interaction) of IFIP, York, UK, 28 Aug - 01 Sep 2023, pp. 501-520. ISBN 9783031422799 (doi: 10.1007/978-3-031-42280-5_32)

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.

• Item Type: Conference Proceedings
• Additional Information: Part of the Lecture Notes in Computer Science book series (LNCS, volume 14142). This work was partly supported by the EPSRC (EP/V008870/1), and the PETRAS National Centre of Excellence for IoT Systems Cybersecurity, which is also funded by the EPSRC (EP/S035362/1).
• Keywords: Touchless gestural interfaces, public displays, interface evaluation.
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Khamis, Dr Mohamed and Farzand, Habiba
• Authors: Gentile, V., Farzand, H., Bonaccorso, S., Rocchesso, D., Malizia, A., Khamis, M., and Sorce, S.
• College/School: College of Science and Engineering > School of Computing Science
• ISSN: 0302-9743
• ISBN: 9783031422799
• Copyright Holders: Copyright © The Author(s), under exclusive license to Springer Nature Switzerland AG 2023
• Publisher Policy: Reproduced in accordance with the publisher copyright policy

Project Code	Award No	Project Name	Principal Investigator	Funder's Name	Funder Ref	Lead Dept
310627		TAPS: Assessing, Mitigating and Raising Awareness of the Security and Privacy Risks of Thermal Imaging	Mohamed Khamis	Engineering and Physical Sciences Research Council (EPSRC)	EP/V008870/1	Computing Science
313490		Preventing THErmal ATtacks using AI-driven Approaches	Mohamed Khamis	Engineering and Physical Sciences Research Council (EPSRC)	5676417 -PETRAS	Computing Science