.@mashable don't know abt USD,bt HKD hav markings in them to help the blind distinguish bet diff denominations...learnt @ #DialogueinDark
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pretty cool--but if you're blind is the centering hard? RT
@mashable This App Identifies Dollar Bills for the Blind - http://on.mash.to/Rgqn1AThanks. Twitter will use this to make your timeline better. UndoUndo
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