[fprint] UPEK TouchStrip device variant ID 147e:2016

[Daniel Drake]

Typhoe wrote:
> Hi,
> 
> I've got no success using the binary from Upek.
> 
> So I installed a Windows XP (And that was a real pain in the ass..., so 
> the delay to reply to you :( ).
> 
> I used UsbTrace (from sysNucleus) to trace the exchange using the 
> FingerReader.

That data format is quite inconvenient to work from. Any chance you can 
do the same using this one instead:
http://www.pcausa.com/Utilities/UsbSnoop/default.htm

Please capture two sessions, and try and make each session quite short - 
i.e. only scan your finger once. Also try and insert a 3-5 second gap 
between each point: e.g. start logging, wait 3 secs, open the scanning 
app, wait 3 secs, scan finger, wait 3 secs, etc.

Also, it may not be practical to write a driver based on the windows 
one. The windows driver for my UPEK device scrambles the data (I can't 
tell if yours does without seeing a second session).

It is unlikely that the UPEK linux driver does scrambling for your 
device -- at least it does not do it for the currently supported 
devices. It would be worthwhile putting more effort into getting that 
working. If you get stuck, ask on the mailing list, maybe someone can help.

Thanks,
Daniel