Thanks. I had never heard of this and I'm surprised its not widely available in America. How does the actual process of creating a new virtual credit card every time work?

Ex: I go to Ebay / Amazon / Alibaba / Walmart / Etsy / Newegg / NoNameSpecialtySite on my phone/desktop/both and make an order. Lets say I make two in a day. One from phone while at work and one from desktop at home. How does that actually occur, and does, Amazon for example, then show me as using a long list of defunct cards? If I make 30 purchases a month, do I have 30 defunct cards on file? Do they freak out about the "we see you're using a new card" all the time, or "you look like a card thief to our algorithm"?