Fingerprint support mint 20

https://forums.linuxmint.com/viewtopic.php?t=323688

Use fprintd (lacks gui)
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sudo apt install fprintd libpam-fprintd
Example code for enrolling your (i) specific finger or (ii) all your fingers: Code: Select all
fprintd-enroll -f left-index-finger
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for finger in {left,right}-{thumb,{index,middle,ring,little}-finger}; do sudo fprintd-enroll -f "$finger"; done
Follow the prompt and swipe your finger across your scanner 5 times.

Finally, enable access by marking Fingerprint option with * using the spacebar key in: Code: Select all
sudo pam-auth-update Working for me in Ulyana, at both terminal and lock screen