User:Changshen
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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.
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"Bank note 1"
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"Bank note 5"
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"Bank note 10"
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"Bank note 20"
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"Bank note 50"
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"Bank note 100"
--Changshen 12:08, 5 January 2007 (UTC)chang shen