[fprint] Verify with any finger?

[Bastien Nocera]

On Sat, 2016-08-27 at 14:59 -0400, Michael Phillips wrote:
> Hi,
> 
> I see in pam/fingerprint-strings.h there is a 'any' finger. I was
> wondering if there is any way to get pam_fprintd to check against all
> enrolled fingers for the user instead of just the first/default
> finger, which is the right index finger. Ideally, I should be able to
> enroll multiple fingers and any finger should work. Is there some
> place in the code to make a quick change and recompile to get this to
> work?

That's already what it does:
https://cgit.freedesktop.org/libfprint/fprintd/tree/pam/pam_fprintd.c#n330

Cheers