Gentoo on Thinkpad T410: authen using fingerprint (gdm)

Step 1:
Download 2 ebuild files named: fingerprint-gui and upekbsapi-bin from this website http://gpo.zugaina.org.
Step 2: Create digest manifest file for them

cd /usr/portage/sys-auth
mkdir {fingerprint-gui, upekbsapi-bin} 

Copy fingerprint-gui-1.00.ebuild and fingerprint-gui-1.00.ebuild to these directories.

ebuild fingerprint-gui-1.00.ebuild digest 
ebuild  upekbsapi-bin-4.0.0218.ebuild digest 

Step 3: unmark  using package.keywords and install

emerge sys-auth/fingerprint-gui 

it shoud install both fingerprint-gui and upekbsapi-bin

Step 4: unmark libfprint and install it
Step 5: load fingerprint-gui and follow the installation steps to scan and verify your finger.
Step 6: Adding fingerprint-gui into pam and gdm

cat /etc/pam.d/system-auth
auth        required    pam_env.so
auth        sufficient  pam_fingerprint-gui.so try_first_identified
auth        required    pam_unix.so try_first_pass likeauth nullok
auth        optional    pam_permit.so
account        required    pam_unix.so
account        optional    pam_permit.so


cat /etc/pam.d/gdm
#%PAM-1.0
auth optional pam_fingerprint-gui.so -d
auth       optional        pam_env.so
auth       include        system-login
auth       required        pam_nologin.so

account    include        system-login

Logout and login to test new authentication method ;-)