Card Authenticator
WEX, Inc. Finance
Secure fuel card transactions
- Rating
- 3.9
- 9 ratings
- Downloads
- 4.7K+
- on Google Play
- Price
- Free
- No in-app purchases
- Updated
- Nov 25
- 2025 · v1.2.2
Screenshots
About Card Authenticator
Card Authenticator is a simple, free, two-factor authentication app to keep your fuel card transactions secure.
Once your fleet manager enables Dynamic Prompt on your fuel card, you can use Card Authenticator to generate the time-sensitive code needed to complete a transaction.
Here’s how it works:
Step 1: Generate code
Before swiping your card, open Card Authenticator to generate a code.
Step 2: Swipe card
Continue with your transaction as you normally would by swiping your card.
Step 3: Enter code
Enter the code provided from the app to complete your transaction.
Fast, easy, and secure.
Note: You will need to know your card number and PIN or passcode to log in.
Once your fleet manager enables Dynamic Prompt on your fuel card, you can use Card Authenticator to generate the time-sensitive code needed to complete a transaction.
Here’s how it works:
Step 1: Generate code
Before swiping your card, open Card Authenticator to generate a code.
Step 2: Swipe card
Continue with your transaction as you normally would by swiping your card.
Step 3: Enter code
Enter the code provided from the app to complete your transaction.
Fast, easy, and secure.
Note: You will need to know your card number and PIN or passcode to log in.
What’s new
Version 1.2.2 · Updated November 25, 2025
Bug fixes
Frequently asked questions
What is Card Authenticator?
Card Authenticator is a free app used for two-factor authentication to secure fuel card transactions.
How does Card Authenticator work?
Card Authenticator generates a time-sensitive code that is used to complete a fuel card transaction. Users need to open the app to generate the code, swipe their card as usual, and then enter the provided code to complete the transaction.
Is Card Authenticator fast and easy to use?
Yes, Card Authenticator is designed to be fast, easy, and secure for users.
What information is required to log in to Card Authenticator?
To log in to Card Authenticator, users need to know their card number and PIN or passcode.
Alternatives to Card Authenticator
Looking for apps like Card Authenticator? Here are 6 similar Android apps on Google Play. The highest rated is Benefits by WEX (4.2/5), and all 6 are free to download.
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Benefits by WEX 4.2
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WEX CardControl 2.6
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COBRA + Direct Bill by WEX 1.8
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WEX Connect 2.8
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Fleet SmartHub 3.3
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EFS CarrierControl 3.4
| App | Rating | Price | Installs | Last updated | Compare |
|---|---|---|---|---|---|
| Card Authenticator | 3.9 / 5 | Free | 1,000+ | Nov 25, 2025 | |
| Benefits by WEX | 4.2 / 5 | Free | 500,000+ | Sep 14, 2026 | Compare |
| WEX CardControl | 2.6 / 5 | Free | 100,000+ | – | Compare |
| COBRA + Direct Bill by WEX | 1.8 / 5 | Free | 50,000+ | Jul 31, 2026 | Compare |
| WEX Connect | 2.8 / 5 | Free | 100,000+ | Aug 7, 2026 | Compare |
| Fleet SmartHub | 3.3 / 5 | Free | 50,000+ | – | Compare |
| EFS CarrierControl | 3.3 / 5 | Free | 50,000+ | Sep 17, 2026 | Compare |
Compare Card Authenticator with the top alternatives: ratings, updates, ASO score and keyword gaps →