GStar Technologies Counterfeit Detector (Pack of 5 Counterfeit Markers)

I really like that one will fit into my purse easy. I was given a $50. counterfeit bill from a Fred Meyer cashier. This happens when a person lets their guard down & trusts people. Now I will be prepared when the cashier asks if I want a big bill.

Really pleased with the product. As it says on the instructions, if you mark the bill, the color will remain yellow if it is a real bill. If it is not a real bill, then the color will immediately turn purple. In my photo, I tested a real bill and a piece of printer paper. You can faintly see a large "X" between the "5's" that is a light yellow color, indicating that it is a real 5 dollar bill. On the piece of printer paper, I marked a similarly sized X that immediately turned purple, obviously indicating that the printer paper is not an official dollar bill. This would be really helpful for any business or business owners who accept cash payments.

Everyone needs this

This product 100% works! It does exactly as it says it does. The ink is lasting and does not dry out, as some of these pens do. You can see in my photo the difference in a counterfeit bill vs.. Real. The bill on top is counterfeit, the pen shows up BLACK. The bottom bill is real, and the pen shows up as a faint yellow color and then slowly fades and disappears. Great product, great value, fast shipping, easy transaction. Definitely recommend the product and seller.

Recently received my counterfeit detector pens and I am so glad! The pack comes with 5 black and purple pens, easily identifiable, and great to leave around or carry with me. The pens identify forgeries in seconds and are incredibly easy to use! Very clear directions: if the mark is yellow, it is a genuine bill and if not, it isn't. These are compatible with most international currencies, perfect for travel, and the marks disappear, so no real harm is done to your money! Great product!

I liked the fact, that these markers did exactly what they were made to do. If the bill was real, the ink coloring came up as a light colored mark.If you run a business, and/ or planning to do so, these markers will aid you in making sure that all you receive is real.I bought these, just to see if it would really work, and it did.For just 6$ its a no brainer.

The pens work great. I tried them on all the money I had in my wallet and they worked well. Initially, the mark made shows up as a light yellowish color but then it disappears. The markers were in great shape, full of ink for plenty of use. They were not dry at all. I like that this can be used on international bills too. Looking forward to using it on my upcoming international trip soon.

Although the ink is not as neon as pictured, these pens still offer a clear indication of whether or not a bill is counterfeit, and at a reasonable price! This is great for a small business owner and could come in handy for garage/trunk sales. Overall a good purchase, I'd say.