Several credit card issuers offer virtual credit card numbers to provide their customers with an added layer of protection.
Capital One offers a virtual credit card number through Eno, its virtual assistant. You download the Eno browser extension and register your Capital One credit card through Eno. When you're ready to checkout, Eno creates a virtual credit card number for you to pay with. Eno can also store virtual card numbers for use again at the same merchant.
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If you're a Citi card user, certain Citi credit cards have a virtual account number feature you can activate in the card benefits section of your online account. Each purchase made will show on your account state with the virtual number used to help you track transactions.
Titanium Apple card users can access their Apple Pay account to find their virtual credit card numbers. This is especially useful when making purchases where Apple Pay is not yet an acceptable payment method.
Like Chase and Wells Fargo, other credit card issuers allow users to create virtual credit card numbers in their digital wallets. They can be used to make purchases online with Apple Pay, Google Pay, and Samsung Pay.
American Express gives users the option for an instant card number on some credit cards, which can be loaded into your digital wallet for immediate use. You don't have to wait until your physical card comes in the mail to do your shopping.
If you're unsure if your card issuer offers a virtual credit card number option, it's best to ask them directly if this is an option for making secure payments.