Comment 17 for bug 216697

I fully agree with the last comment.
For a large group of home users, the primary concern is not security, but convenience, and such users normally don't have classified information on their harddrives anyway. If so, having physical access to the computer (which you need for a finger print reader anyway ;) ) can always give root anyway.

My experience is that the vast majority of "home users" have separate accounts for the convenience of separating settings, documents, email and bookmarks from various family members, and as such greatly appreciate the simplicity of logging in with just the swipe of a finger.

In many cases the alternative is a password-less account or at best a very poor password.