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With US bills, you can use one of these... costs $5.50: http://www.officedepot.com/a/products/548370/Dri-Mark-US-Counterfeit-Money-Detector/ http://www.officede

by logn 12y ago

With US bills, you can use one of these... costs $5.50: http://www.officedepot.com/a/products/548370/Dri-Mark-US-Counterfeit-Money-Detector/ http://www.officedepot.com/a/products/548370/Dri-Mark-US-Cou... Also, on $100 bills, Ben Franklin has a ghost image that can be seen holding up to the light.

droopyEyelids 12y ago
The best way to test is with a strong neodymium magnet. Magnetic ink is one of the last frontiers that counterfeiters have yet to break. But better than all of that is to require the transaction to happen in a branch of your local bank, or post office, and be funded by a money order from the bank or post office.
driverdan 12y ago
NO! BAD! Do not trust the pens. All they do is check the acidity of the paper which is one of the easiest things to fake.