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A card security code is the short, printed number a checkout may ask for to help verify that you have the payment card. It is usually three digits on the back of a Visa, Mastercard or Discover card, or four digits on the front of an American Express card. The code is also called a CVV, CVC, CID or another brand-specific name.
What a card security code is
A card security code (CSC) is a three- or four-digit verification value printed on a payment card. The PCI Security Standards Council (PCI SSC) also calls it a card verification code or value. Its exact name depends on the payment brand: common terms include CVV2, CVC2, CID, CAV2 and CVN2. PCI SSC’s glossary defines the printed code as distinct from verification data encoded in a card’s magnetic stripe.
Where to find the code
Look near the card number, but check both sides if it is not immediately visible. Pay.gov’s consumer guidance describes these common layouts:
| Card brand | Common name | Typical length and location |
|---|---|---|
| Visa | CVV or CVV2 | Three digits on the back, after and to the right of the card number |
| Mastercard | CVC or CVC2 | Three digits on the back, after and to the right of the card number |
| Discover | CVV or CVV2; CID is also used in PCI glossary terminology | Three digits on the back, after and to the right of the card number |
| American Express | CID or CSC | Four digits on the front, after and to the right of the card number |
These are common layouts, not a guarantee for every card design. PCI SSC’s general definition allows the printed code to appear on the front or back.
#1 Best Overall
- RFID Blocking Technology: This credit card holder is made of aluminum shells and ABS plastic, designed with RFID-blocking technology to help protect your credit, ID, debit, and driver's license cards from unauthorized scanning
- Slim Compact: Slim and compact design measures 4.3 x 3 x 0.86 inches, ideal for front pockets or purses
- Card Organizer: With 7 accordion-style slots, this wallet can hold up to 10 standard credit cards or over 20 business cards
- Artistic Expression: Features a variety of artistic designs on the aluminum shell, inspired by famous paintings, flowers, and animals, to complement your personal style
- Thoughtful Gift Idea: Makes a thoughtful gift for any occasion, combining functionality and style
Why an online checkout asks for it
Merchants commonly ask for the code during card-not-present purchases, such as online, mail or telephone orders. PCI SSC says it can help verify that the customer has the card. It is one additional verification detail, not proof of identity, a guarantee that a purchase is safe, or a replacement for other payment-security measures. See PCI SSC’s June 2025 FAQ on requesting card-verification codes.
How the code differs from CVV, CVC and CID
CSC is a general description; CVV, CVC and CID are names used in brand-specific contexts. The terms are related, but technical materials may distinguish the printed value from magnetic-stripe verification data. PCI SSC’s PCI DSS and PA-DSS Glossary v3.2 discusses those concepts separately. For a customer entering a number at checkout, follow the prompt and use the printed code on the card.
Rank #2
- Ultra Slim and RFID Blocking Wallet: This thin card wallet is equipped with advanced RFID blocking technology. It protects your valuable information like ID and credit cards from unauthorized scans. It also allows you to bring it along in your handbag, backpack, front pocket, or purse
- Functional Front Pocket Wallet: Despite its thin design, this credit card holder has ample space to store your cards: 6 card slots, 1 ID window for easy access to your driver's license or ID card, and 1 side compartment for cash / currency
- Credit Card Holder: Ultra-slim and lightweight, at just 4.4" x 3.14" x 0.11" and 1.05 oz, our card holder is crafted from premium lychee leather. It's the minimalist's choice for carrying essential cards with ease, and it adds no bulk to your pocket or purse
- Front Pocket Design: This slim women's card holder is designed for everyday use. Whether you’re shopping, traveling, or heading to the office, this card holder perfectly adapts to your lifestyle
- Perfect Gifts: This credit card holder with exquisite clear box makes a perfect gift for your loved ones on their Birthday, Anniversary, Mother’s Day, Valentine’s Day or Christmas. It’s the best choice for travel, dating, working, shopping, exploring or daily use, etc
How merchants must handle the code
The code is sensitive authentication data. PCI SSC states: “These codes/values are considered Sensitive Authentication Data (SAD). PCI DSS Requirement 3.3.1.2 strictly prohibits storing them after authorization — even if encrypted.” The rule concerns retaining the code after the transaction it was collected for has been authorized; it also applies when the cardholder gives permission. PCI SSC’s card-on-file and recurring-transaction FAQ says the code is not needed for those later transactions, and its FAQ on cardholder permission clarifies that consent does not create an exception.
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Best Value
- [Ultra Slim] measuring only 3.15" x 4.6" x 0.25" and just 0.4" thickness after filling 8 cards.
- [Information Protecting] Enhances personal information security by RFID Blocking, prevent vital cards detail from unnoticed scan.
- [Portable] Super minimalist wallet for carry in front or back pocket; Disassembly D-shackle for lanyard or key-ring.
- [Cards Getting Out Easily] 6x card slots, 1x money pocket, 1x ID / Drivers license window with finger groove for push cards out easily.
- [FurArt Service] Please contact us promptly if quality issue or delivery damaged.
Rank #4
- QUICK ACCESS: Unlike traditional leather wallet, this mens slim wallet is equipped with the ejection mechanism. Simply press the side button on the card holder, all cards pop up at a step pattern that makes them very easy & convenient to take out.
- SLIM BODY, LARGE CAPACITY: This mens minimalist wallet holds up to 12+ cards. The aluminium chamber holds 6-8 and the leather flap holds 4-6 (1 ID window included). There are also removable money clips on the back capable of holding 15+ cash.
- CLEAR ID WINDOW: On the inside of the carbon fiber wallet, which has an ID card holder slot, which allows you to swipe the card without removing the card. It can be used to store ID card, work card, driver license, access card, traffic card, etc.
- RFID BLOCKING: This rfid wallet for men embeds a chip in the aluminum card case to block unknown scanning devices from scanning your credit cards, debit cards, and driver's licenses, maximizing the protection of your personal property.
- PERFECT PRESENT IDEA: This leather wallet is packaged in a beautiful premium box and it is great choice for men. It is a perfect credit card wallet for your friend, lover, parent or yourself on special Days.
Rank #3
- SECURE YOUR WALLET FROM e-PICKPOCKETING: Prevent potential identity and financial theft through your contactless cards. This is the simplest and most effective prevention solution! Block RFID and NFC signals, protect your personal information, and enjoy peace of mind wherever your travels or business take you.
- JAMMING CHIP: An antenna and jamming chip makes up the main components of the card. The antenna will sense incoming radio waves and draw power for the chip to create a jamming signal. Lifetime usage as the card does not require battery.
- BROAD WORKING DISTANCE: With a 2.4” working distance, your entire wallet stays protected. The premium RFID blocking card helps secure cards within 1.2” on either side, providing reliable protection against electronic pickpocketing.
- ULTRA-THIN & COMPACT: At the size of a standard credit card and at only 0.03” thick, the card will fit into any wallet, purse or card case. Keep your wallet compact with no added bulk from this card. Best for travel, business, and everyday use.
- TEST THE CARD: Test the card is working at your local supermarket. At the self-service checkout machines, combine the card and a contactless card on the payment reader. Payment with the contactless card will be blocked and an error message should occur on the reader.
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