The actual payment still comes from your regular card, but this adds a security layer.
Its a fantastic idea, and will really help keep you safer when paying online.
But just like any credit card, it can still be abused.

“If you forget to set it properly you are still on the hook for the subscription.”
How 1Passwords Virtual Cards Work
1Password is a password manager.
You never need to use the name of your dog ever again.
The company has partnered with Privacy.com to provide virtual cards.
Currently, its only available in the US, although more countries should be coming soon.
Additionally, youll need to use Chrome, Firefox, or Microsoft Edge.
Safari is unsupported, but thats also coming soon.
you might set a spending limit, and check the CVV code whenever you need it.
Your actual credit card number is never used.
Another option may be your bank.
Some banks let you create virtual cards specifically for online use.
DoNotPay
DoNotPay is a fantastic service that goes one step further.
The service now does a lot more than that, including virtual cards.
DNP offers you a virtual credit card number that will never, ever allow a payment.
Its specifically designed to avoid scammy subscriptions.
DoNotPay is meant to help.
Instead of entering your own card number, you enter the DNP number.
Then, if anyone tries to bill you, tough.
Regular virtual cards are attached to your bank account and you are responsible for the payments.