title: Keystroke dynamics in Linux
body: <p>I'm thinking of implementing a keystroke dynamics (authenticating people based on their typing patterns) application for Linux. As I see it, I have two alternatives:</p>
  
  <ol>
  <li>Extend the Linux logon to support keystroke dynamics</li>
  <li>Create a desktop-locker program which "locks" the screen and can only be unlocked by a typist with a particular typing pattern</li>
  </ol>
  
  <p>Is alternative 1 possible? Windows supports extending the logon process via msgina.dll, does Linux support something of the sort?</p>
  
  <p>For altenative 2, is is possible to disable the mouse and keyboard?</p>