On Monday 25 February 2008 12:06:23 you wrote:

> I know, that's fine. Imagine a daemon that you can ask for
> identification of the finger. Anytime you may need a fingerprint, you
> just connect to it. Then it can enable the fingerprint identification
> procedure if it is not enabled yet. If your program decides that it does
> not need the fingerprint anymore, it can disconnect. Otherwise it waits
> for the daemon to provide the answer. What will be difficult to
> implement here? The only hacking I see could be useful is splitting the
> scanning and identification/authentication procedure, so you can decide
> what to do with the fingerprint just after you got it.

Ok, agreed, so all we need is to design and implement this daemon. I think 
it's quite good solution. I've heard that Daniel works on somethink like 
that, so I think we should continue our discussion in maillist.

> > so I think
> > libfprint tweaking needed. The only problem we have - we can't determine
> > when fingerprint from scanner is available. If we'll have such
> > functionality from libfprint - we will not have that problem ;)
>
> I think our problems are also caused by the blocking nature of the
> operations, right? But as far as I know this is connected to libusb.

I don't know what causes problem, I didn't dig into :(

> > Btw, all solutions that you've suggest are applicable for pam_fprint. The
> > only trouble is to determine whether pam configured to use pam_fprint or
> > not. Btw, what you will do if pam configured to use pam_fprint and kdm
> > will use libfprint directly?
>
> You may need a separate configuration for kdm, agreed. But this would
> allow logging in with either a fingerprint or a password. With
> pam_fprint I just cannot see a configuration where you could log it with
> either of the techniques in a natural way. Either a password or a
> fingerprint has to be asked first. What if the user wants to log in
> using another method?

Ok, agreed, it will be more convenient to use kdm with 
authentification\identification daemon, but not with pam module directly.

Regards
Vasily

P.S. Don't forget to add [email protected] in CC ;)
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