[fprint] Fingerprint Misidentification

[Keaton Mowery]

Thanks for the idea. I'll try digging into the driver and upping the threshold.

It's a Microsoft Fingerprint Reader, which uses the uru4000 driver in
libfprint. lsusb reports it like this:

   Bus 003 Device 009: ID 045e:00bd Microsoft Corp. Fingerprint Reader

Here's a picture: http://canta.ucsd.edu/~kmowery/fp.jpg

Thanks again!

Keaton

On Tue, Jun 5, 2012 at 6:10 PM, Juvenn Woo <machese at gmail.com> wrote:
> Hi Keaton,
>
> I'm not an expert here, but there're two links might help you a little:
>
> http://www.freedesktop.org/wiki/Software/fprint/libfprint/Imaging%20performance
> http://www.freedesktop.org/wiki/Software/fprint/libfprint/Driver%20quality
>
> Basically, I think there's a threshold for each driver, may be you can make
> it higher for your purpose. I can not identify your device specification,
> and do not know which driver does it use. Or maybe I can have a look for
> you.
>
> best,
> --
> jv ♫
>
>
>
> On Wed, Jun 6, 2012 at 4:45 AM, Keaton Mowery <kmowery at gmail.com> wrote:
>>
>> 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
>> _______________________________________________
>> fprint mailing list
>> fprint at lists.freedesktop.org
>> http://lists.freedesktop.org/mailman/listinfo/fprint
>
>