What is a Secure Online Account Number?
Shop online without revealing your account number.
Our Secure Online Account Number service allows you to generate a temporary card number for safer checkout—anytime you shop online. With Secure Online Account Numbers you can:
- Generate a temporary card number so your real account number is not revealed
- Create and save a number for every online purchase you make
- Re—use the same generated number for the same retailer online
Getting started is easy as 1-2-3
- Choose a version. A Secure Online Account Number pop-up window will appear on your screen.
- Enter your Discover.com User ID and password in the pop—up window and click the "Sign In" button. Not registered? Take a moment to register now.
- Click the "Create Secure Account Number" button to generate a unique number. Copy and paste the generated number into the payment method for your online purchase.
Choose a version that's right for you
Browser Version
(for PC or Mac)
Learn More | Usage Instructions
- Works from our Web site—use at work or on multiple computers
- $0 Fraud Liability
Desktop Version
(for PC)
Learn More | Usage Instructions
- Launches automatically from your computer's desktop when you're ready to check out
- Speed through check-out forms in one click
- $0 Fraud Liability
Create Secure Online Account Numbers: Compare Versions
| Desktop Version | Browser Version |
| Secure |
| Retailers never see your real account number |  | |
 | | |
| $0 Fraud Liability | | |
| | |
| Use on work or shared computers | |
| Convenient |
| Auto-fills forms on checkout | | |
| | |
| One-click access to past purchases and Account Center | | |
| | |
| Save a different secure online number for each online store | | |
| Easy to use |
| Runs from your computer | | |
| | |
| Works directly from your browser with no download | | |
| | |
| Opens automatically at checkout page | |
Create Secure Online Account Numbers: Login
Related Questions
Browse more questions- What is a Secure Online Account Number?
Secure Online Account Numbers is a free service that offers you added security by protecting your account number while shopping online, and the convenience of automatically filling online checkout forms.
Maximum Security:
By using a secure number in place of your actual Discover Card account number, your actual account number is not revealed on the Internet or stored in an online retailer's files. If they don't have your number, it can't be lost or stolen.
Because a secure number can only be used at the store where it was first assigned, if it is ever lost or stolen, it can't be used anywhere else.
With Secure Online Account Numbers you receive:- Generates a secure card number when you buy online—Your Discover Card account number will not travel the internet
- 100% Fraud Protection—guaranteed buying protection and internet security
- Fills online check out forms
- Access your Discover Card account with one click
- What is a CID?
The CID (credit card identification number) is the three-digit number on the back of your card, also sometimes called a credit card verification number. Merchants often ask for the CID so that they know you have the card in your possession at the time you make a transaction.
When an online merchant asks for a CID number, please use the three-digit number generated by Secure Online Account Numbers.
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