Braille pattern dots 1-5-7-8

⣑ identifies dot positions, not a universal letter. Picture two columns with four positions each. From top to bottom, the left column is numbered 1, 2, 3, 7; the right is 4, 5, 6, 8. This character has the top-left dot, the second dot on the right and both bottom dots.

To read it as text, you need the eight-dot Braille code used by the writer: the rules that assign meanings to dot patterns. Unicode preserves the pattern itself; it does not assign it a translation.

Why eight positions rather than six?

Eight-dot Braille adds a bottom pair to the six-dot cell. Braille is a system of raised dots read by touch. The extra positions allow more combinations and are used in computer Braille, including on electronic Braille displays whose pins rise and fall to present text.

Louis Braille developed the six-dot system after encountering Charles Barbier’s raised-dot method at his Paris school in 1821. Barbier had published a method for blind readers in 1815. The eight-dot pattern here belongs to the later extension of Braille.