- Context
- Check if your fingerprint reader device is supported
- Install requirements
- Register your fingerprints In KDE
- Configure your system (window-manager and KDE lock Screen) to use and allow fingerprint for authentication
- References
Context
I have an old Toshiba Notebook which has a Fingerprint device and I wanted to use it to authenticate myself in KDE on openSuse. Similar steps should work on GNOME and other Distros. At the end of the article you can find a reference for KDE running on debian-based distros.
Check if your fingerprint reader device is supported
Run lsusb and check for any device with fingerprint.
(ds) daco@toshiba:~> lsusb
Bus 004 Device 003: ID 8086:0189 Intel Corp. Centrino Advanced-N 6230 Bluetooth adapter
Bus 004 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 020: ID 0930:1314 Toshiba Corp. F5521gw
Bus 001 Device 004: ID 0bda:58f5 Realtek Semiconductor Corp. 2SF001
Bus 001 Device 018: ID 08ff:168b AuthenTec, Inc. Fingerprint Sensor
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
If you find any, copy the ID (in my case is 08ff:168b) and check if it is supported in https://fprint.freedesktop.org/supported-devices.html
if you find it, then follow the next steps 😃
Install requirements
fprintd and fprintd-pam
Use YaST Software or the following command
sudo zypper install fprintd fprintd-pam
Register your fingerprints In KDE
Configure your system (window-manager and KDE lock Screen) to use and allow fingerprint for authentication
Window Manager
kdesu kate /etc/pam.d/sddm
add the following after #%PAM-1.0
auth [success=1 new_authtok_reqd=1 default=ignore] pam_unix.so try_first_pass likeauth nullok
auth sufficient pam_fprintd.so
KDE Lock screen
# this will edit or create a file
kdesu kate /etc/pam.d/kde
and add the following
auth sufficient pam_unix.so try_first_pass likeauth nullok
auth sufficient pam_fprintd.so
and restart sddm
sudo service sddm restart
now you should be able to use your fingerprint to login. Check it out by locking KDE (or press win + l). There should be a message to use fingerprint or password to unlock/ login.
follow: https://en.opensuse.org/SDB:Using\_fingerprint\_authentication
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