Identify and Verify Gnome Users Based on How They Type

Posted on in Categories Gnome, Hardware, Howto, Linux, Linux desktop last updated April 4, 2008

This tutorial explains GDM (GNOME Display Manager) modification to support user verification through keystroke-dynamics processing. Modified GDM allows only you to login. If you go ahead and tell your password to a friend. They still won’t be able to log in using GDM without knowing the precise method of typing required when entering your user name.

You can create and store a one-way encrypted hash of your keystroke patterns when entering your user name. Add code to GDM to read current keystroke patterns and permit a user to log in when the characteristics are a match.

Many commercial products today provide two-factor authentication on Linux systems. These technologies generally require the purchase of additional hardware and create a closed implementation unsuitable for many environments. The code and processes presented here allow you to implement a low-cost authentication-input system based on the characteristics of how a user types his password into the GDM. Moving beyond examples and into implementation, the modifications to GDM presented here allow you to enhance the security of your computer.

=> Identify and verify users based on how they type

Download Of The Day: Ubuntu Linux 8.04 (Hardy) Beta ISO / CD

Posted on in Categories Download of the day, Linux desktop, Linux distribution, Ubuntu Linux last updated March 24, 2008

The Ubuntu project has released beta version 8.04 and available for download from the official project web site.
The Ubuntu developers are moving very quickly to bring you the absolute latest and greatest software the open source community has to offer. New feature includes:

+ GNOME 2.22

+ Linux kernel 2.6.24.

+ Firefox 3 beta

+ PulseAudio

+ Vinagre VNC client

+ Brasero CD/DVD burning application

+ There is a new installation option for Windows users. Wubi allows users to install and uninstall Ubuntu like any other Windows application. It does not require a dedicated partition, nor does it affect the existing bootloader, yet users can experience a dual-boot setup almost identical to a full installation.

The final stable version will be released in April 2008. Download cutting edge version from official mirror.

How to: Enable and Tag Files / Directories in Gnome Linux Desktop

Posted on in Categories Linux, Linux desktop, Ubuntu Linux last updated October 24, 2007

I’ve been looking for something like this. One brand new feature of gutsy is that tracker, a desktop indexer like google desktop, runs by default. Tracker also supports taxonomy for your files and folders but this feature is not yet integrated into gnome. But wait…you can have it anyway in a few simple steps

=> Howto: Enable Tagging in Ubuntu Gutsy in 4 simple steps

I turn my Linux computer off and when I turn it on it runs disk check (fsck) on hard disk. Why?

Posted on in Categories Gnome, Howto, Kde, Linux, Linux desktop, Ubuntu Linux last updated September 13, 2007

A typical question asked by many new Linux users. The answer is pretty simple:

Your partitions are not being unmounted properly when you last shutdown the Linux desktop. Linux needs to shutdown properly (I’m sure this applies to Windows and Mac OS too) before powered off. If you skip this step there could be data loss.

If you are using text based session (CLI), type following command as privileged user:
shutdown -h now
OR
halt

If you are using GUI (KDE / Gnome or any other Windows Manager) click on System > Quit button. Look out for shutdown button.

Do not unplug the power supply. Also use UPS (Uninterruptible power supply) to protect data and to avoid other problems. I recommend APC ups for continuous supply of electric power.

Updated for accuracy.