Learn how to – Setup built-in Fingerprint reader authentication with PAM on Linux.
The aim of this short tutorial is to help you setup and Configure built-in Fingerprint Reader Login authentication on a Linux System. I tested this on My Arch Linux 64-bit Version running on HP Envy 15.
Previously I talked about
There are few packages that you’ll need to install from source to get Fingerprint reader to work. I cannot guarantee that this will work on your machine since I used it on HP only; just try it out.
This article will also explain how to use regular password for backup login method, we wouldn’t use Fingerprint scanner as main way of logging in.
- You must have gcc installed
- Fingerprint scanner
Install all of the following Packages. If you’re running Arch Linux, you can install fprintd and imagemagick
sudo pacman -S fprintd imagemagick
It is an open source software library designed to make it easy for application developers to add support for consumer fingerprint readers to their software.
git clone https://github.com/payden/libfprint.git ./autogen.sh ./configure --prefix=/usr make sudo make install
It is a simple GTK+ application to demonstrate and test libfprint’s capabilities. It is written in C.It provides access to many of the features offered by the backing library, libfprint.
git clone git://github.com/dsd/fprint_demo.git cd fprint_demo/ ./autogen.sh ./configure --prefix=/usr make sudo make install
It is a simple PAM module which uses libfprint’s fingerprint processing and verification functionality for authentication.
git clone git://github.com/dsd/pam_fprint.git cd pam_fprint/ ./autogen.sh ./configure --prefix=/usr make sudo make install
After successfull installation, generate Fingerprint signature, To add a signature for a finger, just run:
You will be asked to scan the given finger. After that, the signature is created in
You can use GUI by running
You may also use
Since i used fprintd, i will add its module to PAM authentication conf file,
The add pam_fprintd.so as sufficient to the top of the auth section
auth sufficient pam_fprintd.so
Save changes and exit. See screenshot below.
Restart your computer and see if you’ll be prompted to scan your finger to unlock Login.