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A Study of Digital Appliances Accessibility for People with Visual Disabilities

Hyunjin An, Hyundoug Kim, Seungwoo Hong, Youngsun Shin

TL;DR

The study tackles the problem of making digital home appliances accessible to visually impaired users by combining a large pre-study survey with an in-depth, HTA-guided evaluation of six common appliances in a home-like setting. It reveals that visual-only cues and uniform auditory/tactile feedback impede sensing and recognition, with distinct challenges for blind and low-vision users in finding interfaces, manipulating controls, and confirming actions. The authors map these findings onto a human–machine interface framework (MacKenzie) to identify where displays, stimuli, and controls fail to convey state and action nonvisually, and they propose concrete design guidelines for touch/tact buttons, knobs, sliders, and physical placement. These guidelines emphasize differentiable tactile cues, distinctive auditory feedback, salient spatial spacing, non infinite knob travel, tactile guidance for sliders, and placement rules to support universal usability, offering practical directions for designers, planners, and developers of future appliances.

Abstract

This research aims to find where visually impaired users find appliances hard to use and suggest guideline to solve this issue. 181 visually impaired users have been surveyed, and 12 visually impaired users have been selected based on disability cause and classification. In a home-like environment, we had participants perform tasks which were sorted using Hierarchical task analysis on six major home appliances. From this research we found out that home appliances sometimes only provide visual information which causes difficulty in sensory processing. Also, interfaces tactile/auditory feedbacks are the same making it hard for people to recognize which feature is processed. Blind users cannot see the provided information so they rely on long-term memory to use products. This research provides guideline for button, knob and remote control interface for visually impaired users. This information will be helpful for project planners, designers, and developers to create products which are accessible by visually impaired people. Some of the features will be applied to upcoming home appliance products.

A Study of Digital Appliances Accessibility for People with Visual Disabilities

TL;DR

The study tackles the problem of making digital home appliances accessible to visually impaired users by combining a large pre-study survey with an in-depth, HTA-guided evaluation of six common appliances in a home-like setting. It reveals that visual-only cues and uniform auditory/tactile feedback impede sensing and recognition, with distinct challenges for blind and low-vision users in finding interfaces, manipulating controls, and confirming actions. The authors map these findings onto a human–machine interface framework (MacKenzie) to identify where displays, stimuli, and controls fail to convey state and action nonvisually, and they propose concrete design guidelines for touch/tact buttons, knobs, sliders, and physical placement. These guidelines emphasize differentiable tactile cues, distinctive auditory feedback, salient spatial spacing, non infinite knob travel, tactile guidance for sliders, and placement rules to support universal usability, offering practical directions for designers, planners, and developers of future appliances.

Abstract

This research aims to find where visually impaired users find appliances hard to use and suggest guideline to solve this issue. 181 visually impaired users have been surveyed, and 12 visually impaired users have been selected based on disability cause and classification. In a home-like environment, we had participants perform tasks which were sorted using Hierarchical task analysis on six major home appliances. From this research we found out that home appliances sometimes only provide visual information which causes difficulty in sensory processing. Also, interfaces tactile/auditory feedbacks are the same making it hard for people to recognize which feature is processed. Blind users cannot see the provided information so they rely on long-term memory to use products. This research provides guideline for button, knob and remote control interface for visually impaired users. This information will be helpful for project planners, designers, and developers to create products which are accessible by visually impaired people. Some of the features will be applied to upcoming home appliance products.
Paper Structure (38 sections, 4 figures, 3 tables)

This paper contains 38 sections, 4 figures, 3 tables.

Table of Contents

  1. Introduction
  2. Related Work
  3. Understanding visual impairment
  4. Studies on Digital appliance Accessibility
  5. Methodology
  6. Participant
  7. Target device
  8. Procedure
  9. Results
  10. Blind
  11. Finding interface
  12. Control
  13. Recognition
  14. Low vision
  15. Finding interface
  16. ...and 23 more sections

Figures (4)

  • Figure 1: Blind participating using the touch button(washer)
  • Figure 2: A low vision participant taking her eyes close to the button to see (refrigerator)
  • Figure 3: A low vision participant taking a picture of the interface with a smartphone and enlarging it to check (induction)
  • Figure 4: MacKenzie's The human-machine interface model mackenzie1995input