Fingerprint acquisition

I am running openSUSE 12.1 on my Thinkpad X220.
I tried to use the fingerprint reader. First I went in Yast to Hardware, Fingerprint Reader and enabled the fingerprint reader, then went to user management. There I selected a user and went to edit, then to plug-ins. I checked “Set the users fingerprint” and hit launch. I swipe my finger over the reader, the system reads the print several times, says 6 successful swipes and then says could not acquire fingerprint.
What do I have to do to get the fingerprint reader to work?