OpenPGP card +Lock screen -- possible???

[Edward Robinson]

Hello all,

Does anyone know if it is possible to use my openpgp smart card as a way of 
locking my screen on my gnome / debian lenny distro?  I was thinking it would 
be nice if on removal of my smart card the gnome-screensaver kicked in.  I am 
not fussed about using it to unlock again (I have a fingerprint reader for that).

I guess really the simplest way would be if it was possible to run scripts on 
removal of the card, that way I could just write a script to launch the 
screensaver.

Cheers,

Edd