A vibration watch using a smart phone for visually impaired people

Since 2010, we have been developing a vibration watch application which can run on a visually impaired person´s mobile phone. Our watch indicates the time by the number of vibrations. Although our watch worked effectively, its use was limited to Japanese mobile phones which can use Flash contents. In this paper, we propose a new version of the application which can operate on smart phones world-wide. We devised operations which are more suitable for a smart phone in order to check the time and we installed a smart phone version of the application program. Tests of time recognition by smart phone resulted in a high success rate.