"Modify the GNOME Display Manager (GDM) to support user verification through keystroke-dynamics processing. 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..."
