According to the trial application. It is found that applications may respond too quickly. Because when touching the screen once will have to go to work in the next step immediately, which in reality. The blind have a habit of groping like touching things. Therefore, accidentally touches the screen often made to press back to previous page open hold, which is quite a waste of time. If the change from touching the screen once twice to make life easier. But overall and satisfied in the applications and to develop further the alerts the shaking and sounds good and because we awake and ready in time. But I want to be reminded again when the bus near more vibration with sound while warnings in time is too short. Want to make the vibrating frequency and more. Because of the blind are mainly mobile hanging around his neck. The other hand is holding the stick. And also to sense the rest of the ships. It makes you feel the vibrations alert rather slow. And I want to give to the frequency of the vibration period long more.