Can vending machines distinguish real and fake coins?

Have you ever used a vending machine to buy something? I believe everyone must know the vending machine. Maybe you will be curious, how does the vending machine know whether the coin you put in is real? What if you put a real coin and a game currency in the vending machine? You must not think that the vending machine will spit out fake coins. How does the vending machine distinguish between real and fake coins? The reason why the vending machine can distinguish fake coins is because there is an electronic coin checker inside the vending machine, which can check the material and diameter of the coin to be inserted. And the thickness is detected to identify the authenticity of the coin and the size of the face value. Any detection result of the counterfeit coin is different from the set value, it will be identified as a counterfeit coin, and the vending machine will spit it out. Vending machines can tell the difference between real and fake coins, so how can we tell the difference in daily life? In fact, there are ways to distinguish genuine and fake coins. 1. Touch with your hands. Criminals usually use molds to make fake coins. The center line, the real coin adopts the pattern on both sides, once formed, the center line of the pattern on the front and back coincides, but the counterfeit coin is pressed twice, so the center line of the pattern on both sides of the counterfeit coin is misaligned, 3. Rusty Nine out of ten coins are counterfeit. Real coins are made of metal alloys that do not rust easily.
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