The world of software is absolutely enormous. Don't make assumptions about what the "everybody knows" subset is. I've interacted with these as an end user doze

The world of software is absolutely enormous. Don't make assumptions about what the "everybody knows" subset is. I've interacted with these as an end user dozens of times, but in 20 years I never heard the term "captive portal". I tend to use the Apple URL to trigger them, and I never understood why the word "captive" was in that URL. Now I know! And I still don't really know how they work (I guess I should read this article...).