[marcosdumay]

It's not platform specific, but everything on Windows uses it, while on other platforms it's a decision people have to make (and often decide for something else, because they don't understand kerberos and it's not trivial to setup). Thus, if you haven't heard of it, you are not on Windows.

[natch]

Where I’ve used it, it was not a decision I had to make (OS X, UNIX). It was a decision made by the IT departments at my organizations. So I’ve most certainly heard of it. No Windows anywhere in the picture. But I get what you are saying, you’re talking about people who have not heard of it.