James Carlson wrote: > Brian Cameron writes: >> Using this approach, when a user puts their finger on the fingerprint reader, >> a daemon could tell GDM to restart using the fingerprint PAM stack. This >> sort of approach could also work and wouldn't require extending PAM at >> all. > > One of the key questions underlying all of this has been the question > of *which* GDM, if there are multiple, should get the event from > *which* reader. If you bind together the biometric reader with the > existing keyboard/mouse/ display group, then it's easy to see how this > works. If the fingerprint reader is dangling in space, it's less > obvious how it works.
That problem isn't unique to fingerprint readers, smartcards suffer from exactly the same problem. In fact any USB device does - especially when used with Sun Ray. -- Darren J Moffat
