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Should I Sign My Credit Card?

Last Updated: December 17, 2023
3 min read

Key points about: signing a credit card

  1. Technically speaking, your credit card is not valid to use until you sign it.

  2. Signing the back of your credit card doesn't make your card less secure.

  3. Signing your credit card is one way to help prevent credit card fraud, along with keeping your card secure at all times and checking your monthly statements for any unauthorized transaction.

Should you sign your credit card after you recently received it in the mail? The answer is yes. Signing your card can help prevent your card being declined when you try to use the card at checkout in a store. There are other reasons to sign, too, including security.

Why you should sign your credit card

First, technically speaking, your credit card is not valid until you sign it. Some credit cards may come printed with the instruction that the card is "Not valid without an authorized signature."

Second, merchants may decline a purchase when your card is not signed. Although many cashiers will accept your card without comparing its signature to yours, it's always possible that they might choose to do so at any time.

Signing your credit card is the best way to ensure it’s available to use when you need it, especially if purchases with your credit card provide an opportunity to earn credit card rewards.

What about writing “See ID”?

Some well-meaning cardholders have written "See ID" on the back of their cards. The idea behind this practice is to reduce the chance of fraud by requiring that cashiers cross-check the customer's card against their driver's license or another form of identification. But, unfortunately, this doesn’t satisfy the requirement to sign the back of your card.

And some merchant agreements may prohibit retailers from requiring cardmembers to present identification as a condition of the sale.

How to sign the back of a credit card

It's a good idea to sign your new credit card as soon as you receive it. Try to use a pen that won’t smear or fade quickly. Your credit card signature should match the name on your account. For example, if your account name includes your middle initial, your credit card signature should too. Otherwise, you could sign the card the same way you would sign any other document.

Where do you sign a credit card?

Each credit card company is a little different, but most credit and debit cards feature a white or gray signature panel on the back. If your card issuer includes your credit card number on the back of the card, you may sign above or next to the card number. You’ll also see the three-or-four-digit CVV code. Many online card transactions require this number. 

Does my signature make the card less secure?

Some credit card users hold the mistaken belief that signing their card creates some sort of security risk.

However, your signature is far from a secret, as it exists on every document, check, and credit card receipt that you’ve signed. What makes your signature unique is your ability to effortlessly duplicate it upon command. In contrast, it takes much more time and effort to attempt to forge another person’s signature.

Merchants ask you to sign their receipts so that they can readily compare your signature against the one on the back of your credit or debit card.

Other ways to ensure your credit card’s security

It's important to consider the security of your credit card, and signing it is one of several ways that you can help to prevent fraud.

In addition, you should never loan your card out to others. If you need to extend your purchasing power to someone else, then you can request an additional authorized user on your account to be issued a card in their name. For example, Discover credit cards offer you the ability to add up to five authorized users to your account for no additional charge.

Also, you should keep your credit cards in a safe and secure place. Never leave your cards in your car, and make sure to store them in a secure place at home and at your workplace so no one could see your credit card information.

Finally, you should always check your monthly credit card statement for any unauthorized charge, especially for small amounts that can be a test charge for future fraudulent activity. Thankfully, some card issuers offer consumer protection services.

Did you know?

Discover offers $0 Fraud Liability Guarantee. You’re never responsible for unauthorized purchases on your Discover Card account.1 So always let your credit card issuer know right away if you see something suspicious.

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  1. $0 Fraud Liability: An “unauthorized purchase” is a purchase where you have not given access to your card information to another person or a merchant for one-time or repeated charges. Please use reasonable care to protect your card and do not share it with employees, relatives, or friends. Learn more at
  • Legal Disclaimer: This site is for educational purposes and is not a substitute for professional advice. The material on this site is not intended to provide legal, investment, or financial advice and does not indicate the availability of any Discover product or service. It does not guarantee that Discover offers or endorses a product or service. For specific advice about your unique circumstances, you may wish to consult a qualified professional.