what is atm card pin

An ATM card PIN, or Personal Identification Number, is a confidential, typically 4-digit security code linked to your debit or credit card. It functions as your digital signature, essential for authorizing transactions such as withdrawing cash from an ATM or making payments at a merchant terminal in India. The PIN ensures that only the authorized cardholder can access and manage their bank account funds, making it a critical element for protecting your financial security.