Fingerprint Reader Ubuntu Natty Dell Latitude XT

Just do these in a terminal:

# Install packages
sudo apt-get install libpam-thinkfinger
# Enable the uinput kernel module to load on boot
echo -e "# For thinkfinger to work\nuinput" | sudo tee -a /etc/modules > /dev/null
# Create a pam profile to enable fingerprint authentication for login and sudo
cat << EOF | sudo tee /usr/share/pam-configs/thinkfingermanualinstall > /dev/null
Name: Manually installed thinkfinger pam profile
Default: yes
Priority: 900
Auth-Type: Primary
Auth:
        [success=end default=ignore]    pam_thinkfinger.so
EOF
# Enable the pam profile
sudo pam-auth-update --package thinkfingermanualinstall
# Register your fingerprints for the currently logged in user
sudo tf-tool --acquire

sudo cp ~/.thinkfinger.bir /etc/pam_thinkfinger/$USER.bir

Problem: Fingerprint doesnt work on Gnome Keyring:

Solution: (UNSECURE!!!) Set gnome keyring password to empty

(delete the folder .gnome2/keyrings and next time you will be asked)

Problem: Fingerprint doesnt work on Screensaver/Lockscreen

Solution: Follow this tutorial http://www.thinkwiki.org/wiki/How_to_enable_the_fingerprint_reader_with_ThinkFinger#xscreensaver.2Fgnome-screensaver