![]() ![]() Some new types of coin acceptors are able to recognize the coins through "training", so they will support any new types of coins or tokens when correctly introduced. The old unit is then cleaned and refurbished. Coin acceptors are modular, so a dirty acceptor can be replaced with a clean unit, minimising downtime. As a consequence of this, the coin acceptor must be cleaned properly on a regular basis to prevent malfunction or damage. When a coin acceptor is used for a long time, thousands of coins rolling along a track will leave enough dirt, dust, oil and grease to be visible. Normal circulation coins eventually collect microscopic particles of dirt, dust, oil and grease from people's fingers. Today, sophisticated electronic coin acceptors are being used in some places that, in addition to examining the mass, weight and size, also scan the inserted coin using optical laser beams and match the image to a pre-defined list, or test the coin's "metallic signature" based on its metallic composition. The next step is generally performed by the banknote-to-coins exchanger. The coin acceptor identifies the coin according to its mass, size, diameter, thickness, metal composition and/or magnetism, and then sends an appropriate electrical signal via its output connection. The basic principle for coin detection is to test the physical properties of the coin against known characteristics of acceptable coins. If a banknote, card or ticket is rejected, it is ejected out of the machine so that the customer can remove it from the slot into which it was inserted. If a coin is rejected, it usually falls into a tray or rolls out of a slot at the bottom where the customer can remove the coin. If the item is rejected, the machine returns the item to the customer. In normal operation, if any item such as a coin, banknote, card or ticket is accepted, it is retained within the machine and it falls into a storage container to allow a member of staff to collect it later when emptying the machine. Because the parameters are different for each coin or note, these currency acceptors must be correctly programmed for each item to be accepted. The process involves examining the coins and/or notes that have been inserted into the machine, and conducts various tests to determine if the currency is counterfeit. These devices are used in a wide range of automated machines, such as retail kiosks, supermarket self checkout machines, arcade gaming machines, payphones, launderette washing machines, car park ticket machines, automatic fare collection machines, public transport ticket machines, and vending machines. ( Learn how and when to remove this template message)Ī currency detector or currency validator is a device that determines whether notes or coins are genuine or counterfeit. ( June 2014) ( Learn how and when to remove this template message) You may improve this article, discuss the issue on the talk page, or create a new article, as appropriate. The examples and perspective in this article deal primarily with the United States and do not represent a worldwide view of the subject.
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