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Your credit card PIN (personal identification number) is a four-digit security code you create or receive from your card issuer. It's used to verify your identity during in-person transactionsâmost commonly when you withdraw cash from an ATM or, in some cases, when you pay at a point-of-sale terminal.
It's important to understand that a PIN is separate from other card security features like your CVV (the three- or four-digit code on the back of your card) or your card number itself. Each serves a different protective purpose.
When you use your card to withdraw cash from an ATM, the machine asks you to enter your PIN. This code confirms that youânot someone who has stolen your card numberâare actually authorizing the transaction. The PIN is encrypted and never stored on the card itself; it's kept only in the card issuer's secure system.
At point-of-sale terminals, some merchants (particularly in other countries) may require a PIN instead of a signature for card purchases, though this is less common in the United States for regular purchases.
The PIN adds a layer of security because someone would need both your physical card and your PIN to withdraw funds or complete certain transactions.
When you first receive a credit card, your issuer typically mails you a PINâoften in a separate envelope from the card itself for security reasons. If you never received one, didn't set one up, or forgot it, you can:
Your issuer may allow you to set your own PIN or generate a new one if you've forgotten the original.
| Feature | PIN | CVV | Card Number |
|---|---|---|---|
| What it is | 4-digit code you enter | 3â4 digit security code printed on card | 16-digit account number |
| When used | ATM withdrawals, in-person chip/PIN terminals | Online purchases, phone orders | Any transaction requiring your card |
| Who sees it | Never transmitted (you enter it directly) | Visible to merchants during online/phone purchases | Visible to merchants and stored in payment systems |
| Purpose | Proves you physically have the card | Proves you have the physical card (for remote payments) | Identifies your account |
Never share your PIN with anyoneânot even bank employees, family members, or customer service representatives. Your issuer will never ask you to provide it verbally or online.
Memorize it rather than writing it down or storing it in your phone. If you do write it down temporarily, keep it separate from your card and in a secure location.
Change it periodically if your card issuer allows it, and especially if you suspect someone may have seen you enter it.
Be aware of your surroundings when entering your PIN at an ATM or terminalâshield the keypad with your hand to prevent shoulder surfing.
In the United States, you'll most commonly use your PIN when:
Many U.S. credit card transactions don't require a PINâyou either sign a receipt or use contactless/chip technology without entering a code. This varies by merchant and card type.
Contact your card issuer immediately through the customer service number on your card. They can:
The process is straightforward and doesn't affect your account or credit standing. Most issuers have this service available 24/7.
Your PIN is a simple but effective security tool. Protecting it and knowing when you actually need it helps you use your credit card confidently and safely.
