My guess is 2fa code apps. Why you ask? Because blizzard already did it. They use their own proprietary 2fa code generator app called battle net, so I have to use it. So after a few months/years of casually not using anything remotely connected with Mr. And Mrs. „Muttermilchknacker”
explanation
(A word derived from the „Panzerknacker” series of comics where the same named group of idiotic bandits try to break open a gold vault full of money, which I use since the scandal where someone stole the lactation bottle of someone working at Activision)
, I finally decided to try Overwatch 2 again, and when I tried to use my login app to confirm my login, I found myself logged out. And when I tried to log in again, I had to use the Authenticator, which I was logged out of, to use my authenticator, in order to log into the authenticator, in order to use the authenticator, in order to log into my authenticator (I could keep going like this forever)
I think your example wins, OP, but I will say for anyone who works in an office environment: Microsoft Office (or Libre alternatives for my FOSS friends which don’t have logins to begin with but whatever).
Imagine if you had to log in every time you opened up a document, and you get automatically logged out after 10 minutes of inactivity and lose any unsaved progress.
Global productivity would grind to a halt. (That, or people finally switch to LibreOffice or similar, but corpos will still reliably do whatever decision seems dumbest).