What is a Personal Identification Number (PIN)?

pin in ASL

Definition of personal identification number

Close-up view of a finger pressing numeric buttons on an ATM keypad, entering a personal identification number with Cyrillic and English labels on dark gray banking machine in a financial transaction

A typical PIN (personal identification number) is a sequence of any four symbols chosen from the 26 letters in the alphabet and the ten digits. If all PINs are equally likely, what is - Mathematics | Shaalaa.com

Closeup finger entering pin (personal identification number) for electronic purchasing by credit or debit card blue screen display