Counterfeiters produce millions of dollars worth of fake currency every year, subsequently costing businesses millions when they try to deposit them in their bank accounts.

The paper (actually a fabric) used in most currency cannot be replicated or reproduced, even by the best counterfeiters. Our counterfeit detection pen contains a specially formulated chemical that tests the material used to make the currency in question.

Simply mark the bill anywhere, and the mark will instantly change color. If the mark stays clear or a slight yellow discoloration, the bill is genuine. If the mark turns black or brown, the bill is a counterfeit!

The mark on genuine currency will disappear within 24-48 hours; therefore you are not illegally defacing the bill. The pen works on most major currencies in circulation, with the exception of Canadian currency.