Life Pro Tip: Don't leave your money in the dryer...
this post was submitted on 27 Aug 2025
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It only looks like US currency doesn't have counterfeit protection features if you only see it in movies or in pictures there are actually a lot of little things that make it difficult to counterfeit. First is its made of a specific cotton linen blend that has a very distinct feel and if you handle cash regularly you can absolutely tell just by touch if it is printed on regular paper and there are markers you can buy that react with it to verify the material is correct. Parts of the bills are also printed in special color shifting holographic inks that would be very difficult to duplicate on a small scale. The hardest one though is there are lots of things that only show up on the bill when you hold it up to the light like a different portrait of the president on the bill in the lower right hand and a strip that is between the layers that has the denomination printed on it. There are also numerous other small things that add up to make counterfeiting quite difficult. They don't do of of these on $1 bills though since its not worth counterfeiting anyway.
tldr; there is actually a lot of security features on US currency also I don't know why I know all of this or why I'm bother to post it to shitpost.
Tangent on the 'not worth printing 1s': I saw a tv thing of a German guy who was just printing 5€ notes on his home printer. Got away with it for many years because it never occured to anyone that someone might counterfeit a 5.
You are very correct in everything you just said. 👍
Coming from a tech that has had to repair and rebuild cash bill validators, you missed a thing..
They also have specially placed printed yellow dots, in the patterns of star constellations, almost imperceptible to the human eye, but designed for the bill validators to quickly recognize.