@DrXym you could argue that it is the 2nd factor, but in reality, it is closer to a username than a password, whether the hash is salted or not.
Even the iPhone or the Galaxy S5 readers can be fooled by a photo of a fingerprint printed with laser, then pouring wood glue into the ridges and using that to fool the reader. The technology hasn't really improved in the last decade - this hack was first demonstrated back on 2002 or so, the resolution of the scanners has improved, so the camera needs a higher resolution image of the fingerprint and a little more care is needed, but the fact is that the technology today is still open to a decade old exploit.