The ATM button plays an important role in making transactions effortless and fast. However, in some cases, the term "ATM button" may not be understood or used by everyone. There are several synonyms for the term that can be used interchangeably such as keypad, touchpad, control panel, input device, and function keys. The keypad refers to the set of buttons used to enter the PIN, select an option, and confirm transactions. The touchpad is similar to the keypad, but it uses a touchscreen instead of physical buttons. The control panel is a synonym for the top portion of the ATM that includes the keypad, screen, and card reader. So, whether you need to understand or explain the ATM's button, these synonyms can come in handy.