keypad
n. B1 Intermediate US //ˈkiˌpæd// UK //kˈiːpæd// key·pad
n. a small set of buttons with numbers or letters on them, used to operate a device like a phone or a lock.
n. a small panel of buttons or keys, typically numeric, used for inputting data or operating an electronic device.
Please enter your code on the keypad.
The security guard watched as the visitor typed a four-digit PIN into the keypad to unlock the gate.
Modern security systems often replace physical keypads with touchscreen interfaces, though many users still prefer the tactile feedback of traditional buttons for entering sensitive passcodes.
From key + pad.
Usage
Commonly used in the context of security systems, telephones, and calculators.