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How Can Vending Machines Tell The Diffrence Between Bills?

July 5th, 2009 Posted in Información General

i mean its the same paper, i can understand coins because they have diffrent sizes but i dont know how they tell the diffrences between 1,2,5,10,ect. bills

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One Response to “How Can Vending Machines Tell The Diffrence Between Bills?”


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    Fisherma
    Says:

    It is called Optical Character Reading (OCR). The bill is scanned by the OCR and the resulting data points are compared with stored data for each bill denomination and a decision is made as to the validity of the bill. It kicks out the bill if it is too worn etc. and cannot make a good decision.


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