linux-fingerprint-drivers / ELAN Match-on-Chip 2 (USB 04f3:0c6c)
USB ID
04f3:0c6c
Source
devices/04f3:0c6c/README.md

ELAN Match-on-Chip 2 (USB 04f3:0c6c)

Status: Working via a community driver.

ELAN "Match-on-Chip 2" fingerprint reader.

What was broken

The device is unsupported by upstream libfprint, so it is unrecognised by stock installs.

What the fix does

Adds a driver adapted from Davide Depau's elanmoc2 driver (originally for 04f3:0c4c). The key changes for this sensor, found by analysing the Windows driver's USB traffic, are 0-indexed hardware slot addressing and an ARM-M4 specific pre-commit slot marker sequence. Enroll and verify are supported.

See also the related ELAN entry: 04f3:0c4c.

Build and install

Modifies the core libfprint library. See CREDITS for the driver repo; it ships install instructions for Ubuntu/Debian, Fedora, and Arch. General shape:

git clone https://github.com/ITx-prash/libfprint-elan-04f3-0c6c
cd libfprint-elan-04f3-0c6c
# follow the repo's per-distro build steps (meson/ninja)
sudo ldconfig
sudo pkill -9 -x fprintd
fprintd-list "$USER"
sudo fprintd-enroll "$USER"

The driver replaces a core system library; use at your own risk and keep a way to restore your distro's stock libfprint.

PAM setup

Enable fprintd in your PAM stack: distro helper where there is one, otherwise auth sufficient pam_fprintd.so. Never required. Full steps per distro are in docs/BUILD.md.

Tested on