Siren 2020 Braille

'Siren 2020 Braille' is identical to 'Siren 2020' - released January 2020 in North America. The official release date on this card is unknown as October is National Disability Awareness Month, so a release in January seems a bit odd. The same release issue was associated with Braille 2018 with a release in July of that year. 

Unlike previous 'braille' Starbucks Cards, this issue has the STARBUCKS braille in the bottom instead of the top of the card. 

The Braille system is a method that is widely used by blind people to read and write, and was the first digital form of writing that was devised in 1825 by Louis Braille. Each Braille character, or cell, is made up of six dot positions, arranged in a rectangle containing two columns of three dots each. A dot may be raised at any of the six positions to form sixty-four (2 6 ) possible subsets, including the arrangement in which no dots are raised.