Hi Vasily, 2016-12-16 21:28 GMT+01:00 Vasily Khoruzhick <anars...@gmail.com>:
> Hey Jan, > > On Fri, Dec 16, 2016 at 7:48 AM, Jan Breuer <jan.bre...@jaybee.cz> wrote: > > Hello, > > I have multiple different figerprint readers from CrossMatch. Because of > the > > acquisition of DigitalPersona and Upek, they are formally Upek TouchChip > > based. I have also documentation of ESS&TFM communication protocol (The > > protocol with "Ciao" header). > > > > I have these readers all with the same USB ID 147e:2016 > > Area sensor TCETC1FF022 > > Area sensor TCETD1FF022 > > Strip senzor TCESC4KS0C0 > > EikonTouch 710 (based on TCETD1) > > > I have extended the upektc_img driver based on this documentation, so it > can > > now work with all these readers. I can also determine image resolution > and > > type (area, strip) at runtime, so it now supports all possible Upek > > TouchChip based sensors. > > Great! > > > I have two questions: > > > > Is it legal to send you patch based on this documentation (documentation > is > > under NDA)? > > I don't know, it depends on the NDA. Thus I'm not sure if you are > allowed to share the code. > But on the other hand, you cannot distribute these modifications in > binary form, since it violates LGPL license. > we still didn't sign any NDA, they give us SDK and now, they just send us NDA they need to sign. I will have to ask them directly to alow me to contribute these changes to libfprint. If they don't alow me to do so, I know it violates LGPL so I will need to use their proprietary TFM implementation for capturing images. Their implementation of figerprint recognition does not work on my target platform so I will have to use NIST's nbis library directly. > > > If yes, what is the best way to tell the driver the sensor type and > > resolution? I'm now changing upektc_img_driver values at runtime, but > these > > values are not properties of currently connected reader but properties of > > the driver itself. It is impossible to use more then one fignerprint > reader > > at a time. Is this OK? > > You can set them to -1 and then update in runtime when you open a > device. In this case it should work even with multiple devices. > > > Best regards, > > Jan Breuer > > Regards, > Vasily > > > Best regards, Jan
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