Fingerprint reader for Lenovo X220t on Ubuntu 11.10

Type the following command to identify your fingerprint reader:

lsusb

If you see this in the output you can try the installation procedure below:

147e:2016 Upek Biometric Touchchip/Touchstrip fingerprint Sensor


Installation:

sudo add-apt-repository ppa:fingerprint/fingerprint-gui
sudo apt-get update
sudo apt-get install fingerprint-gui policykit-1-fingerprint-gui libbsapi.

Then, run the software to configure your fingerprints.

fingerprint-gui

source: http://doc.ubuntu-fr.org/fingerprintgui

SSH remove fingerprint or key from known hosts list

Run this command replacing hostname by relevant name:

ssh-keygen -R hostname