Yea but how do you put brail on a dollar bill I mean think of it, after a year that bill has done gone through 1000 hands and wallets and purses. So that dollar bill hardly looks like the same dollar as someone else's. I know I can tell a difference between a 1 dollar bill and a 100 dollar bill, the texture is different on each of them. America needs to catch up to japan and introduce the cell phone that scans items to buy.