What is the difference between a credit card, a debit card, and an ATM card?

• A credit card charge will always be processed directly from your Visa line of credit, and will require signature authorization at the merchant location.
• A debit card transaction will be processed from your checking account, and it may be authorized either by a signature or by your Personal Identification Number (PIN).
• An ATM card can be used to access an account from an ATM only and will not be accepted for retail transactions.