PIN: Personal Identification Number

Personal Identification Number (PIN). What is PIN? Where it is used?

A personal identification number (PIN) is a secret numeric password shared between a user and a system that can be used to authenticate the user to the system.

PINs are most often used for automated teller machines (ATMs) but are increasingly used at the point of sale, for debit cards and credit cards.

James Goodfellow invented the personal identification number (PIN).

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