What is MG Counterfeit Money Detection and How Does It Work?
Tuesday, January 24th, 2012
Counterfeit bill detection is a necessary evil in a world where high-tech printers and ever-smarter criminals are producing counterfeit bills that can fool most people. Counterfeit money detectors, and many bill counters, help quickly catch counterfeit bills before it becomes a serious problem. I personally recommend any business that deals with tangible cash on a regular basis to use a counterfeit detector. One popular method for catching counterfeit bills is MG (magnetic) detection.
Legitimate US currency implements magnetic ink in strategic locations to help thwart counterfeiters. Many modern counterfeit money detectors, and most bill counters with counterfeit detection, will check for magnetic ink.
Most manual counterfeit money detectors require that you slide a bill over a magnetic sensor. If the bill is legitimate, it will usually audibly and visually indicate that it is real. The process takes just seconds and is faster than manual UV detection or counterfeit ink pen detection.
Most modern bill counters, equipped with counterfeit money detection, will scan for UV (ultraviolet) and MG (magnetic) properties. These bill counters count bills at a speed of hundreds of bills per minute. As the bills are run through the machine, sensors scan the bill for magnetic properties. This is probably the fastest way to check a bill for counterfeit properties.
Is magnetic ink scanning 100% foolproof? While nothing is 100%, magnetic detection is very reliable. Bill bleaching, which can be a problem for some counterfeit detection methods, will typically ruin the magnetic ink properties, rendering the bill useless to counterfeiters.
Considering the reasonable cost of counterfeit bill detectors, with some MG scanners costing less than $30, I recommend investing in a solid machine. The savings in catching a counterfeit bill alone will make up for the cost of the machine.
Our ABC-75, at the time of this article, costs $41 and includes UV (ultraviolet) detection, WM (watermark) detection, MG (magnetic) detction and also includes a magnifying glass. This is a video demo of me using teh ABC-75, including the magnetic ink scanner:
At ABC Office, we offer about 10 different counterfeit detectors (found here), which range from manual operation to automated operation. We also offer almost 2 dozen different bill counters (found here), with about half having counterfeit bill scanning capabilities.
We have over a decade of experience with counterfeit bill detectors, so please feel free to contact us at 1-800-658-8788 with any questions.



Ultraviolet (UV) counterfeit detectors come in all shapes and sizes. Some of them are portable and require the operator to visually confirm the stripe, where others simply pull in the bills and use a sensor to scan them. While UV counterfeit detection isn’t 100% effective, it catches most counterfeit bills. Visual UV detectors catch just about everything, but SOME automated machines may be tricked by bleached bills. If you are using an automated counterfeit detector, I recommend you use one that implements several counterfeit detection measures.
There are few things that can drop your spirits faster than discovering you’ve been duped by a fake bill. Let’s face it, counterfeiters are getting better. Fake bills are harder to tell apart and methods that used to detect bills 10+ years ago aren’t catching everything. If you run or operate a business, you probably need a counterfeit bill detector. One solid model you should consider using is the 
As a result of this issue, the printing presses have been stopped as the issue is being fixed. The Federal Government is now trying to track down all these bills. According to Zachary Roth’s article, it would take an estimated 20 to 30 years to weed out the defective bills by hand.
I like to try and keep up on the news and daily events as much as possible. Yesterday, while I was driving home in my car, I heard a story about a lady who tried to use a counterfeit bill at a bank. Being that I work for a company that sells
UV Detection – Legitimate bills have features in them that react to UV light. This is usually manifested by a brightly lit line in the bill. You can see where these lines are located based on the denomination by 

