[Pollard]

Perhaps they made it for the folks back home in china since the CCP is big on the facial recognition thing.

Available for Mac and Windows only so it does me no good as I run Linux - Kubuntu

[Sergio]

The download page shows a Linux binary which might work with your version of Linux.

[Bikkuri]

Fawkes
Downloads and Source Code - Version 0.3 (July 2020)

Download Linux Binary (v0.3)


Source code included, so it can be checked!
:^D