Virtual Card Helper 作成者: AstroCaleb

Keep the virtual card numbers on your Capital One account one click away, in a sidebar next to whatever site you're shopping on.

Virtual Card Helper is a free, independent, open-source extension. It is not made by, affiliated with, or endorsed by Capital One, and Capital One does not support it.

WHAT IT DOES
• Lists your virtual cards, with search, status filters and a cardholder filter
• Suggests the cards that match the site you're on
• Shows a card's number, expiry and security code, with copy buttons
• Creates new cards, locks and unlocks them, renames them and deletes them

HOW IT WORKS
1. Click the toolbar button to open the sidebar.
2. Sign in to Capital One as you normally would. The extension opens the page for you if you aren't signed in.
3. Your cards appear in the sidebar. To show a number or create a card, the extension briefly opens Capital One's own page, which may ask for a texted code once per session, then brings you back.

YOUR PRIVACY
• It only talks to Capital One, from your own signed-in tab. No other servers, no analytics, no tracking.
• It never sees your password or your texted codes. You enter those on Capital One's own pages.
• It never saves card numbers. Details you show stay in the sidebar for at most 3 minutes, then they're cleared.
• To suggest cards, it searches your cards on Capital One using the first five letters of the site you're on.
• Only your account nicknames and a few settings are saved, on your computer.

WHY FIREFOX ASKS ABOUT YOUR DATA
When you install it, Firefox lists the kinds of data the extension handles. All of it goes only to Capital One, as part of using your own account: cardholder names and card details (to show your cards), the current site's name (to suggest cards), and what Capital One's page displays (to read a card's details after you click Show). Nothing is sent anywhere else.

GOOD TO KNOW
• You need a Capital One credit card account and must sign in to Capital One yourself.
• It can't fill in checkout forms; you copy and paste.
• If Capital One changes its website, the extension may stop working until it's updated.

"Capital One" is a trademark of Capital One Financial Corporation, used here only to say which accounts this extension works with.

Questions or problems: caleb@calebdudleydesign.com
Source code and privacy policy: https://github.com/AstroCaleb/virtual-cards-extension