Feature: Disabling Local Passwords

[RandyParedis]

Is there an existing request for this feature?

• I have searched the existing issues and found none that matched mine

Describe the feature

I want to enable authd to all machines in a larger PC room; however, I do not want the accounts to persist after a log out. This makes the need for a local password (kind of) obsolete.
Ideally, authd should be configurable that no local password is needed.

Describe the ideal solution

By default, local passwords are enabled, but by adding use_local_passwd field to the broker config file (or somewhere else), these can be disabled. SSH will not prompt for a local password, and GDM won't either.

Alternatives and current workarounds

I have not found any workarounds. I suspect I could edit the PAM to make this work, but I do not know enough about PAM to do so.

System information and logs

Environment

• broker version: 0.1+267a15c.f272cc1
• authd version: 0.3.7
• gnome shell version: 46.3.1-1ubuntu1~24.04.1authd2
• Distribution: Ubuntu
• Distribution version: 24.04

Relevant information

No response

Double check your logs

• I have redacted any sensitive information from the logs