I finally found a fingerprint scanner that just works (Digital Persona U.are.U 4500). I enabled it in /etc/pam.d/ in files like sddm, kde, login, sudo.
What I however can’t replace with a fingerprint scan is this pop up window asking for my password when for example I wish to install some software through pamac GUI and other places.
Which PAM file do I have to modify for this to work?
Thanks!
polkit-1 has been moved from /etc/pam.d/polkit-1 to /usr/lib/pam.d/polkit-1. If your system created /etc/pam.d/polkit-1.pacsave you can use the top four lines for fingerprint authentication.