title: Should I do periodic checks in an OnIdle handler or a timer?
body: <p>I want to log the user out of my application after a period of inactivity.</p>
  
  <p>Would it be better to put my check for inactivity in the applciation's OnIdle handler or in a timer handler?</p>
  
  <p>Granularity is not too important. Logout can be plus/minus a few seconds, maybe even a minute.</p>
  
  <p>I get the feeling that the app's OnIdle is going to be firing too often. Any advice? The code iteself is only a few lines.</p>