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Designing Mobile Multimodal Interaction for Visually Impaired and Older Adults: Challenges and Possible Solutions

  1. Michela Ferron Fondazione Bruno Kessler, now at Dedagroup Public Services
  2. Nadia Mana Fondazione Bruno Kessler
  3. Ornella Mich Fondazione Bruno Kessler
  4. Christopher Reeves Streetlab
  5. Gianluca Schiavo Fondazione Bruno Kessler

Abstract

This paper presents two early studies aimed at investigating issues concerning the design of multimodal interaction based on voice commands and one-hand mid-air gestures - with mobile technology specifically designed for visually impaired and elderly users. These studies were carried out on a new device allowing enhanced speech recognition (including lip movement analysis) and mid-air gesture interaction on Android operating system (smartphone and tablet PC). We discuss the initial findings and challenges raised by these novel interaction modalities, and in particular the issues regarding the design of feedback and feedforward, the problem of false positives, and the correct orientation and distance of the hand and the device during the interaction. Finally, we present a set of feedback and feedforward solutions designed to overcome the main issues highlighted.

  1. submitted: 2018-05-25,
  2. accepted: 2018-07-29,
  3. published: 2020-10-06

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Any party may pass on this Work by electronic means and make it available for download under the terms and conditions of the Digital Peer Publishing License. The text of the license may be accessed and retrieved at http://www.dipp.nrw.de/lizenzen/dppl/dppl/DPPL_v2_en_06-2004.html.

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