I have followed the tutorial to use an sd card as login credential using pamusb here:

Login authentication works, screensaver locks when the card is removed and unlocks when I reinsert it... But every time I login, NetworkManager wants to access the keyring and asks for a password to unlock it.

My question... How can pamusb unlock the keyring upon login?

I have looked around for an answer but all I have found are people with the same question and no answer.

Asus EEEpc 1000HA
Ubuntu 9.04