smart card login with multiseat using PAM - cannot map device to session

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Hi all,

I want to know if anyone has done this successfully or if this functionality even exists with PAM.

I am currently using centos 5.3 and pam_pkcs11 with a multi-seat setup (One machine, two video outs, two sets of keyboards and mice to have two users on running off the same machine.

Currently, the multi-seat setup allows me to map the two keyboard/mouse pairs to the two monitors.  The multiseat service allows me to specify a usb hub that is specific to a terminal so I can specify usb bus port 5-1 to my first display and 5-2 to my second display, for example, so that each user  has his own keyboard & mouse.

To extend that idea, I have put a usb smart card reader on each port.

This, however, does not work. 

When person A, at station A plugs in his CAC card into smart card reader A and the OS/session manager asks him for his pin.  This works and allows him to login using CAC card, BUT when you look at station B, station B's session manager is now also asking for the smart card pin even though he has not even put in his would seem like the authentication module linked to the login module does not allow you to map authentication device to session.

Has anyone gotten something like this to work?  Does anyone use PAM & multiseat?  Is this even possible with the latest version of PAM?  Is this a problem with PAM or something with a KDE manager or maybe coolkey or maybe the enterprise smart card module (ESC)? 

I would really appreciate any help I can.

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