Comment 90 for bug 744310

(In reply to comment #14)
> (In reply to comment #12)
> > Hi
> >
> > on this forum: https://bugs.launchpad.net/ubuntu/+source/libfprint/+bug/744310
> >
> > The comment #51 there is a deb package that works in Ubuntu and its more or
> > less stable. Check if it works for your Laptop
>
> Hi, I tried the patch provided on that forum and it worked! Now I am able to
> get fingerprints. Any ideas on how to use it for authentication? I am using
> Ubuntu 12.04. I tried using fingerprint-gui but it crashes with segmentation
> fault. fprint_demo is working.

Yes. The problem with fingerprint-gui is a segmentation fault not yet solved. In order to use it, you have to unistall fingerprint-gui.
Since Ubuntu 11.10 the system integrates the fingerprint authentification without using other fingerprint-gui. And that way it works with this driver.

So to login and authenticate you must have Ubuntu 11.10 or 12.04, uninstall fingerprint-gui. Then reboot the system. Then to access the "Ubuntu" fingerprint go to: System setting -> User accounts. In the users account window you will see the option "Fingerprint Login" on every account. Click the button and register your fingerprints. You will be able to login and use authenticate when root privileges are needed.

P.D. The fingerprint login unfortunately doesn't work if the home user folder is encrypted. But that is not a problem of the driver, is a Ubuntu (or linux) bug.