0. First of all, if you have installed Fingerprint GUI manually before, get rid of it completely. Remove all binaries, shared libraries, any other files and undo all the changes you have made to your system config files (especially to files under /etc/pam.d/).
1. Add this PPA to your sources:
sudo add-apt-repository ppa:fingerprint
sudo apt-get update
sudo apt-get install libbsapi policykit-
1-fingerprint- gui fingerprint-gui