What is a credit card pin number?

@augustus.ziemann 

A credit card PIN (Personal Identification Number) number is a four-digit code that provides additional security and verification when making transactions using a credit card. It is linked to the credit card and is used to authorize certain transactions, such as cash withdrawals from ATMs or making purchases at point-of-sale terminals. The PIN number should be kept confidential and not shared with anyone to ensure the security of the credit card account.