Record multiple scans
While enrolling a fingerprint, take few (say 5) scans of the same finger and store it. Adding this feature will mature the signing in process, since it will decrease the rate of authentication failure of a legitimate user.
i have read that this is the default behavior, it should record a few at enrollment, but it seam that in my case, on the elementaryos repository, the fprintd package only record one print. on another os, pepermint it had ask for 5 swipe and is much more reliable that way. I didn't read about anything on the man stating that you can change that with an argument or a config file, so ether i missed it, or the binary are different. i will now try by compiling the source from here to see if i see a difference.