How Do Vending Machines Know A Real Dollar From A Fake One?
September 29th, 2009 Posted in Información General
It’s the question of the week in physics…
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4 Responses to “How Do Vending Machines Know A Real Dollar From A Fake One?”
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misty m Says:
September 29th, 2009 at 11:43 am
I know the machine not only knows a fake dollar,but also a fake twenty. In the times we live in the merchants have too protect them self’s. The lottery machine/the machine at the race tracks they all have a scanner to recognize if the bill is fake.
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Free WP Autoposter Plugins Says:
September 29th, 2009 at 11:43 am
good question. but i think it is something with magnets but i dont know…
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Joan R Says:
September 29th, 2009 at 11:43 am
Weight,shape - who knows?
Who’d want to forge a dollar anyway? - they are worth next to nothing from what I have heard.
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Al Mac Wheel Says:
September 29th, 2009 at 11:43 am
It is not a question of physics.
and the answer is IT IS A SECRET
I know the answer, because I work in an industry that makes some of the stuff, but I don’t want to spell out details that will help forgers.
There are too damn many people using home PCs with color printers to try to defraud people and machines. I want to help those people go to jail long time.
I don’t want to give info that woul help them get better at their craft.