Source: https://mstdn.isometry.group/@Cahatstrophe2/117323121764942610
transcript
@Cahatstrophe2@isometry.group: you’ve heard of two factor authentication. you’re heard of three factor authentication. now get ready for just never being able to fucking log in at all

Doesn’t give me the nostalgia feeling and is also multi user by design.
Still, it would be a fun weekend project, you can start with Linux, set up autologin, set dosbox to autostart on startup, you can even install Windows 3.
Or just for that nostalgia hit: https://archive.org/details/win3-1
So … buy an old 486 and have fun with that, I guess. They still exist, though finding a working one could be pretty difficult and/or expensive these days.
You won’t get back that LAN only world of the past but in Linux and even Windows you can simply disable network adapters/controllers. Maybe if I ever have kids I’ll recreate a LAN only environment for them.