Biometric Login

[Mike Ross <rcb decipher me uk>]

Hello,

I'm interested in starting a project to allow users to login using a
Biometric scanner. Most probably this will be a fingerprint scanner. Is
anyone already working on something similar?

I have downloaded the latest gdm source and began to trawl through it,
but it's a bit slow going. Can anyone point me towards any docs on it or
give me a brief overview of how gdm works?

Regards,

Mike Ross