How Does A Vending Machine Detect The Denominaton Of Coins?
Many moons ago, I won £5 on a one-armed bandit in Plymouth. It paid out £1 in UK currency, and the rest in Canadian one-cent coins. The crew of the Canadian ship that was in harbour got wise that their one-cent coins were the same size as our sixpence.
Things have moved on.
Coins are firstly weighed. Then measured. Then there are other checks which are a trade secret.
This is why, if you try to use a slightly worn or bent coin in a slot machine, it is rejected. It’s a bugger when you need cigarettes from the pub machine !
How Do Vending Machines Know Which Coins And Notes You Put In?
I heard it was to do with weight and size but they’d have to be very precise and surely coins lose weight over years by being chipped away etc. I’ve tried making fake coins but they never get accepted despite me using the same size and weight as a normal coin.
What about notes, how can a machine read notes? Is it by the serial number?