# fprintd

**Repository Path**: liuyunli/fprintd

## Basic Information

- **Project Name**: fprintd
- **Description**: mirror of libfprint/fprintd
- **Primary Language**: C
- **License**: GPL-2.0
- **Default Branch**: v1.94.5
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2025-09-09
- **Last Updated**: 2025-09-10

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

fprintd
=======

https://fprint.freedesktop.org/

Daemon to offer libfprint functionality over D-Bus
Might eat your kangaroo.

Written in C.

Licensed under the GPL version 2 or any later version (see COPYING).

A PAM login module is included in the 'pam' directory.

Development
===========

For developers wanting to contribute to fprintd, please see:

* [DEVELOPMENT.md](DEVELOPMENT.md) - Comprehensive development guide including building, debugging, and contributing
* [QUICK_START.md](QUICK_START.md) - Quick start guide for getting up and running

Translating
===========

fprintd and pam_fprintd are translated using weblate. Please visit
https://translate.fedoraproject.org/projects/fprintd/ to contribute
translations.

API use cases
=============

- User wants to use the fingerprint reader, and enroll
  his fingerprints, or remove some fingerprints from the database

- Administrator wants to enroll fingerprints for a particular user,
  or remove fingerprints for a particular user

- Laptop/desktop authentication:
  * Check for fingerprint devices
  * Check whether a particular user has any fingerprints enrolled
  * Verify a fingerprint for a particular user, or, if the device
  supports it, verify that the fingerprint matches against
  any of the fingerprints enrolled

- Point Of Sale authentication (in a bar, the fingerprint reader is
  used to see who accesses a particular point of sale/till, in place
  of PIN code authentication and/or tokens)
  * Given a list of users, verify which one has scanned their finger

Debugging
=========

To enable debug output run `systemctl edit fprintd.service` then enter:
```
[Service]
Environment=G_MESSAGES_DEBUG=all
```
Save the result and restart fprintd using `systemctl restart fprintd.service`.

After that, you can grab the logs using `journalctl -u fprintd.service`.

For more detailed debugging information, see [DEVELOPMENT.md](DEVELOPMENT.md#调试指南).