WHAT IS THE Authentication OF A ATM CARD?

The authentication of an ATM card involves verifying the identity of the cardholder before granting access to their bank account. This process typically includes entering a Personal Identification Number (PIN), which is a secret code known only to the user. Upon entering the PIN, the ATM system checks it against the information stored in the bank's database. If the PIN matches, the transaction proceeds; if not, the ATM denies access to protect the account from unauthorized use.