one way might be to add multiple fingerprints with:
Code:
fprintd-enroll -f [left-thumb | left-index-finger | left-middle-finger | left-ring-finger | left-little-finger | right-thumb| right-index-finger | right-middle-finger | right-ring-finger | right-little-finger]
(and possibly for several users by adding username)
and then verify any of them with
Code:
fprintd-verify -f any
(possibly for several users by adding username)