- A currency-counting machine is a machine that counts money—either stacks of banknotes or loose collections of coins. ... Currencycounters are commonly used in vending machines to determine what amount of money has been deposited by customers.
- A currency detector or currency validator is a device that determines whether notes or coins are genuine or counterfeit. ... The process involves examining the coins and/or notes that have been inserted, and by using various tests, determining if the currency is counterfeit.