It's not something most of us think about on a daily basis, but most watches are basically useless for the visually impaired. Traditionally, the solution to this was to make watches with crystals that could flip up, allowing the wearer to feel the hands. These tended to be poorly made and touching the hands is a really good way to throw a watch off over time. But there are more creative solutions out there. Meet the Dot, a sleek motorized smartwatch that uses braille to give the wearer the time.