Abstract—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.