They mean to have a static single character on the screen and have it change with every keypress. For example, you type "a" and it shows /. You type "b" and it shows "|", etc.
Every time I see a comment on the state of Tahoe I look wearily at my current install of Sequoia. I'll have to update at some point. But I'll hold out as long as I can...
I see, thanks. I've definitely seen instances where an AP is broadcasting multiple SSIDs with different BSSIDs. I suppose I just thought nothing of it... but that makes sense.
Do most consumer APs/routers allow you to just change the MAC address on the fly? I don't think the ones I've owned have ever allowed that. But that would certainly be interesting to try (if you were somewhere without any other address interference that would tip it off)
The SSID (name, like the article mentions) is different than the bSSID (mac address of the access point), so I don't think it would be that easy to spoof.