I'm looking for alternative, non-keyboard-password authentication methods to unlock my laptop. Whatever authentication it is, it should be quick and convenient to perform and relatively secure. Yes, subjective criteria, I know. Think Android-style shape drawing gesture, though. It would fit that criteria. Or perhaps activate webcam for face recognition?
Unfortunately this Samsung S9 doesn't have a fingerprint reader nor NFC. It does have a multitouch clickpad/touchpad, webcam, bluetooth. There's pam_blue, which I've experimented with, but it turned out to be too unmaintained to properly work with recent PAM versions. Idea was to make bluetooth phone visible and pam_blue would scan the local area for known devices.
How to choose the answer for this question? I'd say the main criteria would be general accessibility for accomplishing the goal, considering the restraints set by the device and being a PAM module. IE I can't pick a solution as an answer if it requires purchasing some $1000 magic dongle or similar.