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How Do Vending Machines Detect Fake Coins?



Science Channel

MACHINES: HOW THEY WORK
Thursdays 10/9c on Science
This machine can decipher coins with pinpoint accuracy. Light sensors measure the size while electromagnets detect the metal type of the coin.

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45 thoughts on “How Do Vending Machines Detect Fake Coins?
  1. back at highschool we had a broken can vending machine. it would drop 2 cans instead of one, it was very nice.

  2. At my school there's a vending machine. Same but the sensor only for if their fall he give a change if hqve, but if its not fall off it not give money back. What a shameeee

  3. Well I ordered snack from vending machine and the spiral didn't make the whole turn, so it didn't released my snack, but i didn't lose my credit though, so I tapped it again and it gave me two of them for the price of one 😆.

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