Well, you could deliberately enter false credentials to your old email addresses, checking if you were connected to the real world, mixed in with some correct c

Well, you could deliberately enter false credentials to your old email addresses, checking if you were connected to the real world, mixed in with some correct creds. And see if it works as expected. But this is pretty hard to remember. Suppose you just wanted to do this with a variety of gmail addresses just using memory. Would they still be even working? I probably have about 10-15 passwords I use frequently enough that I could use them to verify if I was connected to the real thing. I could enter a few fakes. It's an interesting question, how can you tell if you are in a vr or not via credential checking with deliberate fakes.