International Journal of Information Technology & Computer Science ( IJITCS )
Touch technology advances in recent years. The use of touch products has been quite popular in daily life and education field. Users can enter their commands by clicking, pushing, rotating or dragging. Then the electronic devices can respond immediately on screens. However, visual impaired people hardly precisely receive visual information from this kind of electronic devices. Instead, they must depend on touch, hearing or other senses to operate these devices and receive feedback. A lot of researches were dealing with touch products in recent years, but few studies explore the issue about how visually impaired people use the touch products. This study aimed to explore this issue. A task-oriented experiment was conducted with 18 visually impaired participants, who were asked for searching some specific applications among icons in a touch screen (9.7 inch). The strategies adopted, the problems encountered and used in operation by the participants were recorded. A qualitative analysis and one-way ANOVA analysis were used to analyze the collected data. The results have shown (1) User searches applications with a fixed pattern strategy would have shorter searching time. (2) Users can not quickly learn the location of the application (3) Once the operation was inter upped, two memory strategies were adopted: restart at where was inter upped, at the beginning point. (4) Users often accidently activated the device. (5) Users hardly determine the icon size and relative distance among icons.
Based on the findings, the individuals with visual impairment do have difficulties in operate the touch products, however, they develop some strategies to try to conquer the difficulties. These findings could be a good reference for relative industries to design more friendly touch products for visual impairment, and for educators to guide visual impairment to use touch products.
: Visual Impaired People, Human Factors, Interface Design, Tactile Sensations Technologies, E Education
- By Xu Juchang (), the root cause of the air teaching - Audio-visual education, audio-visual education bimonthly, 1987, 29 (2) ,1-19J. Clerk Maxwell, A Treatise on Electricity and Magnetism, 3rd ed., vol. 2. Oxford: Clarendon, 1892, pp.68–73.
- J. H. Burgess, Human Factors in Industrial Design: the Designer Companion. TPR, Blue Ridge Summit, PA,1989
- C. Y. Leung, Y. T. Yao, and S. C. Chuang, A Study on Requirements and Opinions in Operating Air-condition for Visually Impaired People. In: International Conference on Speciation Education and Art Therapy, Taichung University, Taichung, Taiwan, R.O.C., 2008.
- M. Shinohara, Y. Shimizu, and A. Mochizuki, Three-Dimension Tactile Display for the Blind, IEEE Transaction on Rehabilitation Engineering, 6 (3), 1998, pp. 249-256.
- B. Lowenfeld, The Visually Handicapped, Review of Educational Research, Education of Exceptional Children, 33 (1), 1963, pp. 38-47.
- C. Y. Wu, A Study on Designing the Optimal Parameters of Hierarchical Menu System on 3C Products for Visually Impaired People. Thesis for Master of Science, Department of Industrial Design, Tatung University, Taiwan, 2006.