How Do Vending Machines Detect Fake Coins?
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MACHINES: HOW THEY WORKThursdays 10/9c on ScienceThis machine can decipher coins with pinpoint accuracy. Light sensors measure the size while electromagnets detect the metal type of the coin.More Machines!http://www.sciencechannel.com/tv-shows/machines-how-they-work/Full episodes streaming FREE on Science GO:https://www.sciencechannelgo.com/machines-how-they-work/Subscribe to Science Channel:http://bit.ly/SubscribeScienceCheck out SCI2 for infinitely awesome science videos. Every day.http://bit.ly/SCI2YT
Fortunately my arm was both long enough and thin enough that I could reach up and pull the snack loose. My friends quickly learned that if it happened to them to come look for me to get it out for them.
All for some cheetos.
The machine uses a Laser to detect coin width.
Assuming counterfeiters got the faux coins width incorrect
LOL what a BS, 99% of vending machines use size and weight only :D