fprintd

fprintd is a D-Bus daemon, not a standalone command. Use the related client commands.

fprintd is the fingerprint daemon that provides fingerprint scanning functionality through D-Bus. It acts as a system service managing fingerprint readers and enrolled fingerprint data, allowing applications to authenticate users via fingerprints.The daemon itself runs in the background and is typically started by systemd. Users interact with it through client utilities:fprintd-enroll - Register new fingerprintsfprintd-list - List enrolled fingerprintsfprintd-verify - Verify a fingerprintfprintd-delete - Remove enrolled fingerprintsIntegration with PAM allows fingerprint authentication for login, sudo, and other system authentication points.

Requires a compatible fingerprint reader supported by libfprint. Not all readers work reliably. Fingerprint data is stored in /var/lib/fprint and should be protected. PAM configuration is required for system authentication integration.

fprintd is part of the fprint project, which provides fingerprint reader support for Linux. The project was started to bring standardized fingerprint authentication to Linux systems, leveraging the libfprint library for hardware abstraction.

fprintd-enroll(1), fprintd-list(1), fprintd-verify(1), fprintd-delete(1)