PIN pads are primarily used as what type of device?

PIN pads are primarily classified as input devices because their main function is to accept data entered by users. When a user enters their Personal Identification Number (PIN) on a PIN pad, this action involves submitting information that is sent to the connected system for verification. The purpose of an input device is to provide a means for users to input data or commands into a computer or electronic system.

While some PIN pads may have small screens that display information (which could suggest an output function), their primary role revolves around capturing input. Therefore, they are primarily classified as input devices. This distinction is crucial in understanding the specific functions of different devices in computing and information technology.