Most of the thinkpads come with an integrated fingerprint reader from UPEK.This artilcle explains the way in which the integrated finger print reader can be enabled on major distros running on Thinkpad Systems
All the Major Linux distros can be configured in a similar fashion,the only difference arises when we have to evoke the Admin previlages in the terminal to update/ or to install additional patches from the central repositories.
Opensource Drivers for Ubuntu :
Opensource Drivers are available from Launpad.net.These are said to be more stable than the propriteary ones from UPEK. More instructions are available at the Launchpad site
Proprietery Drivers from UPEK (For thinkpad systems only) :
Upek Provides these Fingerprint Packages which are not opensource. The following Distributions are supported.
The Zip file obtained from the site contain the pre-compiled binary files which can be executed to configure them.
Note :The links will take you out of the Lenovo forums site