Coin vending function to distinguish true and false?

Did you use the vending machine to buy anything? Maybe you wonder, vending machines and have no long eyes, how does it know you give really coin, if to the vending machine of the same size and into the coin slot metal? The result will give you a surprise, the false coin vending machine would be spit it out. Vending machine is how to distinguish true and false coin, vending machines can discern the false COINS, because in the interior of the vending machine, there is a electronic COINS checker, it can throw a coin on the tested material, diameter and thickness, thus to identify the true and false, with the size of the face value of the coin either counterfeit detection results, and different value set, will be deemed to be counterfeit, vending machine will spit it out. Vending machines can distinguish true and false coin, then daily, how to distinguish ourselves? Actually distinguish true and false coin is method, 1. Touched with the hand, the criminals usually use a mold to create false COINS, decorative pattern is often than fuzzy, really feels a bit also gave a hand, not as smooth as true COINS, 2. See the centerline, true coin is taken sides pattern, a molding, decorative pattern on both sides of the center line of overlap, but false coin is pressed twice, so false coin sides pattern of the centerline and dislocation phenomenon, 3. Rusty coin nine times out of ten is false, real COINS are made of metal alloy, it is not easy to rust. About the related questions of the vending machine, do you still want to know what? Welcome to leave a message.