We can describe the shutter as the gate mechanism that, during cash deposit and withdrawal transactions at ATMs, prevents any financial loss by controlling customer access to the cash and preventing tampering with the ATM system.
Under what circumstances does the shutter open?
It opens to allow cash to move in or out during transactions where the customer exchanges cash (cash deposit, cash withdrawal, bill payment, etc.).
Under what circumstances does the shutter not open?
The shutter does not open for any transaction where the customer inserts their card but does not perform a cash withdrawal or deposit (account listing, balance inquiry, account transfer, PIN change, etc.).
Why is the shutter important?
The shutter is the mechanical cover that closes the ATM's cash dispensing and depositing opening. It prevents foreign objects from being inserted into the ATM, prevents cash from being pulled out from outside, and prevents the device from being tampered with. It also protects the inside of the ATM from dust and moisture.
What happens if the cash is not taken?
If the customer does not take the cash within a certain period of time during a withdrawal, the ATM pulls the cash back in and the shutter closes. This process is called a "retract." The retracted cash is held in a separate compartment, and the refund to the customer's account is processed according to the bank's rules.
Shutter malfunctions
The shutter failing to open or close is one of the most common ATM malfunctions. When the shutter malfunctions, the ATM generally stops cash withdrawal and deposit transactions, but transactions that do not require cash, such as balance inquiries, can continue to be performed.
Fraud attempts
In some fraud methods, a cash-trapping device is placed over the shutter opening in order to withhold the customer's cash. When the customer leaves the ATM thinking they did not receive the cash, the fraudster removes the device and takes the money. If anything unusual is noticed on an ATM, it is recommended to call the bank's call center before leaving the ATM.
