Here is a six key braille keyboard for a smartphone. https://www.boundlessat.com/Blindness/Braille-Displays/Hable-One-Braille-Keyboard https://www.boundlessat.c

Here is a six key braille keyboard for a smartphone. https://www.boundlessat.com/Blindness/Braille-Displays/Hable-One-Braille-Keyboard https://www.boundlessat.com/Blindness/Braille-Displays/Hable...