Is it possible to authenticate user without asking him to provide username/password and using only "second factor", i.e USB drive or fingerprint device? The idea is that I just want to insert the device to PC and to authenticate to this Linux machine without touching the keyboard. The decision about the user who needs to be authenticated will be made according to the attached device.
How can I achieve this(if it is possible) in Linux using PAM? Is it possible to create such a PAM module which will accomplish this?
Thank you very much!