II. SPECIFICATIONS OF A VIBRATION WATCH
A. Using Smart Phone
The reason for targeting the smart phone platform is as
follows. (1) By using NFC (Near field communication) visually
impaired people can start the application program of our
vibration watch easily. Thus, if a visually impaired person
carries a smart phone, he or she does not need to have another
watch. (2) We can use the display and vibration function of the
smart phone for indicating the time. (3) There is an embedded
software which operates a smart phone and it is not dependent
on the Android phone. (4) A vibration watch can use the time
function of a smart phone which is synchronized with world
time clocks automatically. Therefore, visually impaired people
don’t have to adjust the time