I’ve seen this in some distro’s and I’m not sure if this is a log-in manager or a desktop environment specific thing, maybe it’s neither. Then again maybe it’s both, cause your your log-in manager is part of the environment. Both there’s no such thing available for me on antergos with openbox.
Yes I know I could just create and delete an account on demand but that requires me to log in, do that, log out, log-in to the new account and stuff like that.
I doubt that a script creating a new user from a log-in manager would be bloating or against the minimalism of ob.