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What is my Credit Card Security Code?

The security code adds additional verification that a customer is in fact the owner of the card they’re using. It’s used in the card not present transaction space, which includes any transaction that occurs without the physical card present—online, phone, mail, and fax orders.

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The security code adds additional verification that a customer is in fact the owner of the card they’re using. It’s used in the card not present transaction space, which includes any transaction that occurs without the physical card present—online, phone, mail, and fax orders.
This 3-digit code is your Card Security Code. American Express Credit Card Users Look for the 4-digit code printed on the front of your card just above and to the right of your main credit card number.
The card security code is located on the back of MasterCard, Visa, Discover, Diners Club, and JCB credit or debit cards and is typically a separate group of three digits to the right of the signature strip.
The card security code is located on the back of MasterCard, Visa, Discover, Diners Club, and JCB credit or debit cards and is typically a separate group of three digits to the right of the signature strip.
The card security code is located on the back of MasterCard, Visa, Discover, Diners Club, and JCB credit or debit cards and is typically a separate group of three digits to the right of the signature strip.
Credit Card Glossary: Terms and Definitions

A credit card security code, also known as card verification value (CVV) or card verification code (CVC), is a three- or four-digit number on the card that provide an extra layer of protection for.

The Card Security Code is located on the back of MasterCard, Visa and Discover credit or debit cards and is typically a separate group of 3 digits to the right of the signature strip. The CVC should not be confused with the standard card account number appearing in embossed or printed digits. The standard card number undergoes a separate validation algorithm called the Luhn algorithm which serves to determine whether a given card's number is appropriate.

These codes are not printed or embedded in the card but are entered at the time of transaction using a keypad. What is the official name for a credit card's 3 digit code?

I think we're slowly moving all of wikipedia's content to SO However, you can if you like use different terms depending on the card type: Thank you for the quick response. FYI, not all cards written the code in the back side. AMEX cvv code is in the front and 4 digits.

You can't find a consistent reference because it seems to go by at least six different names! From Wikipedia , The Card Security Code is located on the back of MasterCard, Visa and Discover credit or debit cards and is typically a separate group of 3 digits to the right of the signature strip.

There are actually several types of security codes: MaSuGaNa 12 Stack Overflow works best with JavaScript enabled. American Express started to use the CSC in , in response to growing Internet transactions and card member complaints of spending interruptions when the security of a card has been brought into question. In , a new e-commerce technology called Motioncode was introduced, designed to automatically refresh the CVV code to a new one every hour or so.

The card security code is typically the last three or four digits printed, not embossed like the card number, on the signature strip on the back of the card. On American Express cards, the card security code is the four digits printed not embossed on the front towards the right.

The card security code is not encoded on the magnetic stripe but is printed flat. As a security measure, merchants who require the CVV2 for " card not present " payment card transactions are required by the card issuer not to store the CVV2 once the individual transaction is authorized.

Virtual terminals and payment gateways do not store the CVV2 code; therefore, employees and customer service representatives with access to these web-based payment interfaces, who otherwise have access to complete card numbers, expiration dates, and other information, still lack the CVV2 code. This applies globally to anyone who stores, processes or transmits card holder data. However, some merchants in North America, such as Sears and Staples , require the code.

For American Express cards, this has been an invariable practice for "card not present" transactions in European Union EU countries like Ireland and the United Kingdom since the start of To do this, a merchant or its employee would also have to note the CVV2 visually and record it, which is more likely to arouse the cardholder's suspicion.

Supplying the CSC code in a transaction is intended to verify that the customer has the card in their possession. Knowledge of the code proves that the customer has seen the card, or has seen a record made by somebody who saw the card.

The CSC for each card form 1 and 2 is generated by the card issuer when the card is issued. It is calculated by encrypting the bank card number and expiration date two fields printed on the card with encryption keys known only to the card issuer, and decimalising the result.

From Wikipedia, the free encyclopedia. American Express also sometimes refers to a "Unique Card Code". Archived from the original on 24 April

Every credit card has a card security code printed on it. It may be called a CSC, a card verification value (CVV or CV2), card verification code (CVC) or card code verification (CCV), but you need to know what -- and more importantly, where -- it is. This 3-digit code is your Card Security Code. American Express Credit Card Users Look for the 4-digit code printed on the front of your card just above and to the right of your main credit card number. The security code adds additional verification that a customer is in fact the owner of the card they’re using. It’s used in the card not present transaction space, which includes any transaction that occurs without the physical card present—online, phone, mail, and fax orders.