How it works? | ATM
The prototype of the first ATM was invented by American scientist Luther Simdzhyanom in 1939. The device gave out cash, but could not write them off from the account: The unit was not associated with the bank. In 1967 in London, it was established more advanced ATM. He still did not know how to check the availability of money in the client's account, and therefore the amount to withdraw cash was limited to 10 pounds. ATM was a "smartcard" and gave out cash in exchange for a voucher (check), which had previously receiving in the bank. To protect against forgery on the checks had weakly radioactive label. How does the modern ATM? This is in today's issue!
In modern ATMs holes form for admission card has a curved shape slightly. This is necessary in order to complicate the fraudsters skrimmingovogo installation of equipment by means of which they can read data cards and steal money. Through the "reading" of the magnetic stripe or chip card is identified by the ATM. Inside the device there is a special communication module that communicates with the bank's processing system via a modem or cable.
At the bottom of the ATM is a safe cassettes are configured under the notes is strictly specific denomination. Typically, the cassettes 4 to 6, and in each of which about 2-3 thousands of identical banknotes. In this case, all the notes are checked several times in the bank, and then sealed by tape. Thus, the bank guarantees that the ATM is not counterfeit banknotes. When a request comes into the ATM cash withdrawal, the system automatically recalculates how many notes and some dignity should be issued. ATM knows how much money is left in each cartridge, and if the client wants to withdraw more money than it has, the device fails. Some ATMs are able to also accept money. But taken bills are sent in a separate cassette and are not issued to other people, while at the bank will not check them carefully.
Between the ATM and the bank has a secure encrypted communication channel. On it informs an ATM bank card data, and that, in turn, allows the removal of the required amount, or does not allow. ATM machine stores information for each transaction, a card is inserted and the issued bill, while it synchronises with the video camera recording. This information is sent to the bank and stored in a database.
It is also important the fact that the cash machine is powered by electricity. Therefore, if it suddenly disappears - ATM is disabled. Old ATM without electricity leaves the client card in itself, and when power is supplied again, it returns the card back. If nobody takes a few seconds, then moves it to the ATM in a special storage, and already pays only the collector. As for the new ATMs, they give the card to the client, even without electricity. Money, however, at the termination of the power supply will not give out any old or new ATMs, even if the time to count them. In this case, the operation is canceled.
Also, all ATMs are equipped with sensors that report the slope, noise and temperature rise. This is done for security. Sensor triggers a corresponding service receives the signal directly, and if necessary, travels to place a rapid response.