CVV (card verification value) number is also sometimes referred to as the CVC number (card verification code). Put simply, they are different names for the same function, fraud prevention.
The CVV number is an anti-fraud measure used when you’re making a purchase but aren’t required to enter a PIN or sign a receipt. This is why you’re often asked to enter your CVV number if you’re shopping online or making a purchase over the phone. This is so the merchant or payee can verify that you are indeed the cardholder, which can avoid people using your card for fraudulent transactions.
These numbers are usually located on the back of your credit/debit card on the right side of the white signature strip, and are 3 or 4 digits long, depending on your card provider.
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