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.

翻译：本研究旨在识别视障用户在家电使用中遇到的困难，并提出解决这些问题的设计指南。通过对181名视障用户进行问卷调查，并依据致残原因和残疾等级筛选出12名参与者，在模拟家庭环境中，我们采用分层任务分析法对六类主要家电的操作任务进行系统测试。研究发现：家电常仅提供视觉信息，导致感官处理困难；界面触觉/听觉反馈趋同，造成功能识别障碍；盲人用户因无法获取视觉信息，需依赖长期记忆操作产品。本研究提出了针对视障用户的按键、旋钮及遥控器界面设计指南，为项目规划者、设计师和开发者创造视障友好型产品提供参考。部分设计特性将应用于下一代家电产品。