An automated teller machine or automatic teller machine (ATM) (American, Australian and Indian English), also known as an automated banking machine (ABM) in Canadian English, and a cash machine, cashpoint, cashline or sometimes a hole in the wall in British English and Hiberno-English, is a computerized telecommunications device that enables the clients of a financial institution to perform financial transactions without the need for a cashier, human clerk or bank teller. ATMs are known by various other names including ATM machine, automated banking machine, "cash machine" (Geldautomat - Germany) and various regional variants derived from trademarks on ATM systems held by particular banks.
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