[fprint] Match-on-chip device by PixelAuth - model Primex

[Benjamin Berg]

Hi Furkan (and anyone at PixelAuth),

On Tue, 2020-09-15 at 16:44 +0300, Furkan Salman wrote:
> I have been working with PixelAuth developer who have a new
> fingerprint sensor with match-on-chip with storage capacity of 16
> fingers. 

Sorry if I didn't have a closer look at the code yet.

> We have been able to get a working open source driver for it but
> there is a need to find a standard to have match-on-chip for multiple
> user with similar fingers enrolled.
> 
> Might need help in understanding how multi user with similar
> fingerprint can be implemented and also a way to delete only selected
> fingerprint of a given user as currently it deletes all fingerprint
> in the device. 
> 
> Here is the git for working driver. 
> https://gitlab.freedesktop.org/llforce/libfprint/-/tree/pa_primex
> 
> If anyone can look into this and help with missing stuff. 

I can take a look, feel free to just send me a reminder if forget.
Also, feel free to reach out to me in private if there is anything that
you cannot discuss openly.


Could you explain to me what the storage code is for? You really
shouldn't be needing any storage code within the libfprint driver. The
libfprint API user (i.e. fprintd) will take care of this for you.

It looks to me like you are trying to solve problems in the driver that
are better handled by libfprint or fprintd (and may be solved already
there).


Other than that, is PixelAuth able to provide a couple of samples for
the current maintainers of the project (one goes to me at Red Hat and
the other would go to Marco at Canonical)?
I'll provide shipping information in private then.

Benjamin
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