Configuring fingerprint reader in Ubuntu 13.0425. Apr '13

Compared to Ubuntu 11.10, this is much-much easier. Just install PAM fingerprint module:

sudo apt-get install libpam-fprintd

No need to run pam-auth-update anymore, because fingerprint login is enabled immideately after the module is installed.

Final step is to enroll your fingerprints:

Ubuntu PAM