The Braille pattern dots-1356 ( ⠵ ) is a 6-dot braille cell with the top left, middle right, and both bottom dots raised, or an 8-dot braille cell with...

characters. The Braille pattern dots-245 ( ⠚ ) is a 6-dot braille cell with the top right and both middle dots raised, or an 8-dot braille cell with the top...

Thermoplastic materials were created to print documents and images and later Braille characters. There are many patents and methods to expel drops with piezoelectric...