Abstract
Main purpose of our study is to develop an Android application that can support crippled person to communicate with others using the smartphone. Crippled person who cannot communicate by oral use computers or mobile phones to communicate with others. Many of them use a mobile phone which Autoscan mounted and has an external switch such as the touch sensor, not a general one. However, for reasons that stop production of this special terminal, it is very difficult for them to buy it nowadays. Therefore, the smartphone has been mentioned as a candidate for an alternative terminal. But maintenance of accessibility is not sufficient yet. We have developed a software keyboard which has Autoscan and one touch input system that can be entered easily by them. In this article, we have selected the Japanese as the main language for the input system and have developed some software keyboards. We tested this developed Android application. In the paper, we also show formulas for the index of ease of input in order to examine the results of the experiment. Taking into the results of these experiments, we have examined the settings for building an environment friendly according to the user input. We would like to extend the functionality of the software keyboard and consider the requirement of features for futures studies.
