How Accurate Are Counterfeit Detection Pens?

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Counterfeit detection pens are not always accurate and may give you a false result. Rather than using the counterfeit detection pens exclusively, consumers and cash handlers should also check the bill’s security features to guarantee its authenticity. Three new features, security thread, color shifting ink, and a watermark, were incorporated into the bills in the 1990s and were enhanced for the Series 2004. These features vary depending on the denomination.

Pen manufactures claim over 98 percent effectiveness, but critics suggest the effectiveness is only around 80 percent for new bills and even lower for the older bills.

There are several other products available, but unfortunately, none are fool proof. The counterfeit detection pens work most of the time and the black light is fairly accurate. But if a bill has been folded and stuffed into a pocket, and the pocket has been laundered, the black light will show a false reading.

The best way to test for a counterfeit bill is to trust a teller’s fingers and a teller’s intuition, because an experienced teller will let very few counterfeit bills get by them.



Next Page: When Did The United States Government Add Counterfeit Detection Features?

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