User:Changshen

I have an idea to make bank notes for visually impaired people by punching certain pattern of holes on the bank notes. Hole can be any shape. Advantage: (1)Can be easily distinguished, even with circulated and worn out bank notes. (2)Can be applied to old notes and old design.

--Changshen 12:08, 5 January 2007 (UTC)chang shen