Braille watch is used by touching the dial and noticing the embossments. Both
analog and
digital versions are available. The analog versions have a protective glass or crystal cover that is flipped open when time needs to be read and the clock-hands are constructed to not be susceptible to movement at the mere touch of the finger that a blind person uses to observe their positions. In the digital form, the dots (like
braille script) keep changing position as time changes. In this case, one must understand the
Braille alphabet to read the watch. Electronic
talking watches, which speak the time at the touch of a button, are also popular among people who are blind. ==References==