Most coin changer products are designed for easy repair and maintenance. Some machines feature an LED indicator that identifies problems, such as a jammed or bent coin or dirty sensor. The LED is ...

Coin-operated machines have a longer history than you might think. Ancient temples used them to dispense, for example, holy water to the faithful in return for their coins. Old payphones rang a bell ...

Devices that collect coins for payment typically use standardized coin acceptors like the one shown here. These devices use a protocol called ccTalk to let the system know what coins were inserted.