Comment 12 for bug 276384

mannheim: As explained above by otzenpunk and J0rd, gnome-keyring has to face a different problem than PAM. PAM can arbitrarily decide to allow a user to log in, it is completely mastering this authorization process. It is not the case of gnome-keyring, which stores the passwords in an encrypted file on the disk. To decrypt you passwords, you need the master password of the keyring, this is a technical/physical/absolute requirement.

What would be needed is to replace the master password with something you can get from fingerprints. But that's not easy, if even possible: images are always different, and you would have to find a constant feature of your fingerprint without being able to compare with precedent images. Possibly a realm of investigation for future developments, but certainly not a bug to fix!

So the only solution here can be to remove secure storage of your passwords by setting an empty master password. Use at your own risk if you lose your laptop! For now, I guess this bug must be closed.