The Front of Your Card: What You'll See
A credit card is a rectangular piece of plastic or metal, usually 3.4 inches wide and 2.1 inches tall — the size of a standard ID. The front displays your name, a long number (typically 16 digits for Visa and Mastercard, 15 for American Express), an expiration date, and the card network logo. The number is embossed or printed so it raises slightly from the surface; this matters because older card readers and imprint machines still use the raised numbers.
Below the card number you'll see a two-digit expiration date in the format MM/YY — the month and year when the card stops working. This is not when your account closes; it's when the physical card expires and your issuer sends you a replacement. The card network logo (Visa, Mastercard, American Express, or Discover) appears in a corner, usually the bottom right.
Some cards have a hologram or a metallic security feature on the front. This is a fraud-prevention measure; it's difficult to counterfeit and helps merchants and ATMs verify the card is genuine.
Key Takeaways
- Your card number, name, and expiration date appear on the front, and the card network logo tells you which payment system processes your transactions.
- The three-digit security code on the back (four digits for American Express) is required for online purchases and phone payments but should never be stored.
- The magnetic stripe on the back contains encoded account data and is read by older card machines; the chip does the same job for newer terminals.
- Contactless payment symbols (usually a curved wave) mean you can tap or hold the card near a reader instead of inserting or swiping it.
- The issuer's customer service number is printed on the back so you can call to report fraud, ask questions, or manage your account.
The Back of Your Card: Security and Contact Information
The back of the card holds the magnetic stripe — a dark band about half an inch tall that runs horizontally across the upper portion. This stripe contains your account number, expiration date, and other data encoded magnetically. When you swipe a card at an older checkout terminal or gas pump, the machine reads this stripe. The stripe can wear out or be damaged by heat, which is why some older cards stop working even though they haven't expired.
Below the magnetic stripe is a white or light-colored box called the signature panel. Historically, you were supposed to sign this box, and a cashier would compare your signature to the one on a receipt. This practice has largely disappeared, but the panel remains on most cards. Some cards leave it blank intentionally as a security measure — if someone finds your card, they can't forge a signature that's already there.
Next to or below the signature panel is a three-digit number called the CVV (Card Verification Value) or CVC (Card Verification Code). American Express cards have a four-digit code in the same location. This number is not embossed and does not appear anywhere else on the card or your statement. It's used only for online purchases, phone orders, and mail orders — never for in-person transactions. You should never store this number or share it except during a purchase you initiated.
At the bottom of the back, you'll find the issuer's customer service phone number. This is the number to call if your card is lost, stolen, or fraudulent, or if you have questions about your account, balance, or payments.
The Chip and Contactless Payment Features
Most cards issued in the last five years have a small metallic square embedded in the front, usually in the lower left corner. This is the EMV chip (Europay, Mastercard, Visa). When you insert your card into a chip reader at a checkout terminal, the chip communicates directly with the payment network. Unlike the magnetic stripe, which stores static data, the chip generates a unique code for each transaction. This makes it much harder for fraudsters to clone your card.
Some cards also display a contactless payment symbol on the front or back — usually a curved wave or series of curved lines. This means the card has near-field communication (NFC) technology built in. You can tap or hold the card a few inches from a contactless reader (marked with the same symbol) to complete a payment without inserting or swiping. Most contactless payments work for transactions under $100, though some merchants allow higher amounts.
If your card has both a chip and a magnetic stripe, the chip takes priority. Most modern terminals read the chip first; if the chip reader fails, the terminal falls back to the stripe. You should never bend or scratch the chip, as this can prevent it from working.
Material and Durability
Most credit cards are made of PVC plastic, which is durable but can crack or warp if bent sharply or exposed to extreme heat. Premium cards — often offered to high-spending customers or those with excellent credit — may be made of metal (usually aluminum or stainless steel) or a composite material. Metal cards are heavier, more durable, and more difficult to counterfeit, but they cost the issuer more to produce and may not work with all card readers.
The card's edges are usually beveled or rounded slightly to prevent sharp corners from catching on wallets or pockets. The thickness is standardized at 0.76 millimeters, so all cards fit into the same slots in ATMs, card readers, and payment terminals.
Over time, the embossed numbers and text can wear down, the magnetic stripe can degrade, and the plastic can become brittle. This is why cards expire and why issuers send replacements every few years, even if you haven't requested one.
What Information Should Never Appear on Your Card
Your PIN (Personal Identification Number) should never be printed, embossed, or written on your card. If you see a PIN on a new card, contact your issuer immediately — this is a sign of fraud or a manufacturing error. Your PIN is known only to you and the issuer's system; it's used only at ATMs and some in-person terminals when you choose to enter it.
Your full Social Security number, date of birth, or mother's maiden name should not appear on the card itself. Some older cards printed the last four digits of the Social Security number, but this practice has been phased out. Your billing address is not printed on the card, though it's stored in your account.
The CVV code should never be printed or embossed anywhere except the back (or front, for American Express). If you see it elsewhere, the card may be counterfeit or compromised.
Variations by Card Network and Issuer
Visa and Mastercard cards look nearly identical to most people — both have a 16-digit number, an expiration date, and a chip. The main difference is the logo and the color scheme, which varies by issuer. American Express cards typically have 15 digits and a four-digit security code. Discover cards have 16 digits and a three-digit code, similar to Visa and Mastercard.
Some issuers print additional information on the card, such as a rewards program name, a cardholder tier (like "Platinum" or "Gold"), or a custom design. Business credit cards may include a company name or employee ID number. Secured credit cards (used to build credit) look identical to regular cards but are backed by a cash deposit you've made.
Virtual credit cards — numbers generated by your issuer for online shopping — don't have a physical form at all. You receive the number, expiration date, and CVV through your bank's app or website and use them for online purchases only.
How to Protect Your Card's Information
Keep your card in a wallet or cardholder that protects it from bending, scratching, and exposure to heat or moisture. Avoid leaving it in a hot car or near direct sunlight for extended periods. If the chip or magnetic stripe becomes damaged, contact your issuer for a replacement.
Never photograph your card's front (which shows your full number and expiration date) or back (which shows the CVV). If you need to store card information for your records, write down only the last four digits and the expiration date. Memorize your CVV if possible, or store it separately from the card number.
When making a purchase in person, keep your card in sight. At restaurants, ask the server to bring the terminal to your table rather than taking your card away. Online, never enter your card information on a website unless the URL begins with "https://" (the "s" indicates encryption).
Frequently Asked Questions
Why does my card have both a chip and a magnetic stripe?
The chip is more secure, but not all merchants have updated their terminals to read it. The stripe is a backup for older machines. Most new terminals prioritize the chip; if it fails, they fall back to the stripe. Eventually, as all terminals upgrade, the stripe will be phased out.
What if the numbers on my card are hard to read?
Contact your issuer and request a replacement card. Worn or faded numbers can cause problems at older card readers or when you need to provide your number over the phone. Replacement cards are usually free and arrive within 7 to 10 business days.
Can I use my card if the expiration date has passed?
No. Once the expiration date passes, the card stops working at all merchants and ATMs. Your account remains open, but you cannot use the physical card. Your issuer should send a replacement automatically 30 to 60 days before expiration. If you don't receive one, call the number on your statement.
Is it safe to give my card number to someone over the phone?
Only if you initiated the call to a merchant you trust. Never give your card number to someone who called you unsolicited. Legitimate companies will never ask for your full card number, expiration date, and CVV all together over the phone. If you're unsure, hang up and call the merchant's official number from your statement or their website.
What does the hologram on my card do?
The hologram is a security feature that's difficult to counterfeit. It helps merchants and card readers verify that the card is genuine. Some holograms change appearance when tilted, making them even harder to fake. Not all cards have holograms, but many premium cards do.