Howdy: Windows Hello-style Facial Login for Linux

Howdy brings Windows Hello-like facial recognition login to Linux. Using your built-in IR emitters and camera, it provides convenient authentication. Integrating with PAM, it works everywhere you'd normally use a password: login, lock screen, sudo, su, etc. Howdy supports Debian/Ubuntu, Arch Linux, Fedora, and openSUSE, with detailed installation instructions covering .deb packages, AUR, Fedora COPR, and building from source. Important: Howdy's security is not absolute and should not be used as your sole authentication method.