ThinkPad E14 Gen5 Enable fprint on Arch Linux

1 - How to enable fingerprint:

1.1 - Install packages (Not as root!):

• Install git:

  pacman -S git
  

• Install yay:

  git clone https://aur.archlinux.org/yay-bin.git
  

  cd ./yay-bin
  

  makepkg -si
  

• Install libfprint-fpcmoh-git (AUR):

  yay -S libfprint-fpcmoh-git
  

• Install and enable fprintd:

  pacman -S fprintd fprintd-pam
  

  systemctl start fprintd && systemctl enable fprintd
  

1.2 - Register fingerprint

• Login configuration (Change debug, max-tries and timout to your liking):

  for file in /etc/pam.d/{login,su,sudo,gdm,lightdm,polkit-1}; do { echo 'auth sufficient pam_fprintd.so [debug=on] [max-tries=10] [timeout=5]'; cat "$file"; } > temp && mv temp "$file"; done
  

• Delete existing fingerprint signature

  fprintd-delete "$USER"
  

• Register all fingers (left + right hand)

  for finger in {left,right}-{thumb,{index,middle,ring,little}-finger}; do fprintd-enroll -f "$finger" "$USER"; done
  

1.3 - Troubleshooting

• Maybe you'll need to enable fingerprint authentication with authselect (I needed this on e.g. Fedora Linux):

  authselect enable-feature with-fingerprint
  

  authselect apply-changes