Science Fair Project Encyclopedia
Canadian currency tactile feature
The new bills (the "Canadian Journey" series) have a tactile feature to indicate denomination in the upper right corner of the face side of the bill. This tactile feature is a series of raised dots but is not standard Braille because the Canadian federal government, in consultation with the Blind and visually impaired, decided a different system is more accessible. The principal designer was Dr. Susan Lederman, a professor of Psychology at Queen's University.[1]
Currency denomination must be recognized at a glance and standard braille was deemed too sensitive. Thus Canadian currency uses a system based only on full blocks of Braille cells. the denomination is expressed by the number and (only for the $100 bill) arrangement.
This chart illustrates how the Braille cells are arranged:
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