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For Ubuntu 16.04 LTS or greater, it would be simple as only required two steps to install Fingerprint Scanner. Tested using Lenovo Thinkpad X240

  1. sudo apt install libpam-fprintd
  2. fprintd-enroll

That’s it. You can now login or even use for sudo access using finger print

Alternative: Fingerprint GUI

tux@freelinux:~$ sudo apt install libpam-fprintd
Reading package lists… Done.
Building dependency tree
Reading state information… Done
The following NEW packages will be installed:
libpam-fprintd
0 upgraded, 1 newly installed, 0 to remove and 282 not upgraded.
Need to get 0 B/9,336 B of archives.
After this operation, 68.6 kB of additional disk space will be used.
Selecting previously unselected package libpam-fprintd:amd64.
(Reading database … 173955 files and directories currently installed.)
Preparing to unpack …/libpam-fprintd_0.6.0-1_amd64.deb …
Unpacking libpam-fprintd:amd64 (0.6.0-1) …
Setting up libpam-fprintd:amd64 (0.6.0-1) …

tux@freelinux:~$ fprintd-enroll
Using device /net/reactivated/Fprint/Device/0
Enrolling right-index-finger finger.
Enroll result: enroll-stage-passed
Enroll result: enroll-stage-passed
Enroll result: enroll-stage-passed
Enroll result: enroll-stage-passed
Enroll result: enroll-completed

Now can use fingerprint reader to run sudo

tux@freelinux:~$ sudo apt-get update
Swipe your finger across the fingerprint reader
Get:1 http://security.ubuntu.com/ubuntu xenial-security InRelease [102 kB]
Hit:2 http://sg.archive.ubuntu.com/ubuntu xenial InRelease
Hit:3 http://ppa.launchpad.net/fingerprint/fingerprint-gui/ubuntu xenial InRelease

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