Recently I switched to Ubuntu 14.04 trying to give Linux another chance (previously I tried Linux Mint which I find an excellent distro for users migrating from Windows) and after finishing setting up my ThinkPad W520 I wanted to enable the fingerprint reader.
I found multiple solutions describing how to enable the fingerprint reader using, one of them was using fPrint but it wasn’t so “elegant” as Fingerprint GUI.
Installing ThinkPad Fingerprint In Ubuntu
To enable the ThinkPad fingerprint in Ubuntu 14.04 you will need to add the following PPA and install Fingerprint GUI: ppa:fingerprint/fingerprint
sudo apt-add-repository ppa:fingerprint/fingerprint-gui && sudo apt-get update
sudo apt-get install libbsapi policykit-1-fingerprint-gui fingerprint-gui
On the Finger tab you have to register one or more fingers, then log out and log in so the new defaults take effect.
Now you can unlock your screen and run commands with root privileges using your fingerprints.
Uninstalling Fingerprint GUI
If you decide to uninstall the Fingerprint GUI you must install back the standard PolicyKit daemon.
sudo apt-get install policykit-1-gnome
sudo apt-get remove fingerprint-gui
More information about Fingerprint GUI can be found on the Launchpad project page.