Login with Fingerprint on Linux Mint

apt search fprint
sudo apt install fprintd
sudo apt install libpam-fprintd
sudo pam-auth-update
Activate „Fingerprint authentication“ with the space bar, then Tab and Ok
fprintd-enroll -f [finger]
[finger] can be:
left-thumb left-index-finger left-middle-finger left-ring-finger left-little-finger right-thumb right-index-finger right-middle-finger right-ring-finger right-little-finger
fprintd-verify
to try it.