But that's a hassle. First you have to figure out how to use the webpage / app to get the virtual credit card number. Once you know, you still have to log into

But that's a hassle. First you have to figure out how to use the webpage / app to get the virtual credit card number. Once you know, you still have to log into a separate service and click a few buttons. With PayPal or Amazon Payments you just click your password manager's button to log you in right in the checkout process on the same webpage.