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Paddy O'Flanigan
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Anti Counterfeit Pens - How Do They Work?

03/26/2008 1:33 PM

What kind of special ink do those counterfeit pens you see in the grocery stores have? How does it react with the currency paper?
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bhankiii
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#1

Re: Anti Counterfeit Pens - How Do They Work?

03/26/2008 1:56 PM

The magic Googleball says:

The counterfeit detector pen is extremely simple. It contains an iodine solution that reacts with the starch in wood-based paper to create a black stain. When the solution is applied to the fiber-based paper used in real bills, no discoloration occurs. The pen does nothing but detect bills printed on normal copier paper instead of the fine papers used by the U.S. Treasury.
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case491
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#2
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Re: Anti Counterfeit Pens - How Do They Work?

03/26/2008 5:50 PM

What about the toilet-paper they use in England?
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bhankiii
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#3
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Re: Anti Counterfeit Pens - How Do They Work?

03/26/2008 6:04 PM

I've never been to England. Send me some.
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Bricktop
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#4

Re: Anti Counterfeit Pens - How Do They Work?

03/27/2008 7:41 AM

In England, I think they make the TP from fiberglass.

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 I go into every human encounter expecting to be framed for a crime I didn't commit. Dilbert, 2013
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HUX
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#5

Re: Anti Counterfeit Pens - How Do They Work?

03/27/2008 12:06 PM

my pen doesn't work, I think it's a fake
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case491
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#6
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Re: Anti Counterfeit Pens - How Do They Work?

03/27/2008 2:31 PM

The pen?
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Previous in Forum: So why can't metals be transparent, some of their salts and compounds are?   Next in Forum: When will gasoline be replaced?

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