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I'm surprised this article does not mention the use of virtual credit card numbers in their list of solutions. I use one-time / temporary card numbers with expirations and dollar limits from my issuer[1] for both online and over the phone transactions

[1] https://www.cardbenefits.citi.com/Products/Virtual-Account-N...

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I tried to do this with Citibank a few years ago and couldn't get it to work. I don't know if the issue was something in my browser, or what, but it just wouldn't generate the numbers for me. After that, I gave up. Maybe it works better now?

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