[fprint] Fingerprint Misidentification

[Keaton Mowery]

Hi all,

I recently wrote a small fprintd using libfprint and deployed it on
our biometric soda machine at UCSD. Registration works great, and
recognition of registered fingers is also working fine. Unfortunately,
we're having some trouble with non-registered fingerprints. Namely,
they are recognized as other, registered fingerprints.

We're using libfprint 0.4.0 with a Microsoft Fingerprint Reader device
( http://www.amazon.com/Microsoft-DG2-00002-Fingerprint-Reader/dp/B0002WPSB2
). Our code is here:

fpserv_async.cpp: http://pastebin.com/EkehWnJu
fpserv.cpp: http://pastebin.com/Dtq2upLR

Any ideas? If we can't discover this, I may have to roll my own fp
detection, and that would be unfortunate. Thanks.

Keaton Mowery
UC San Diego