Simple keystroke dynamics (KD) with jQuery

Question

I want to develop a simple application for measuring residence time and flight time (see http://www.techrepublic.com/article/reduce-multi-factor-authentication-costs-with-behavioral-biometrics/6150761 ) in the text area / field . how can i use keypress () or keydown () up () methods to record these events?

Answer 1

I do not understand why it was not worth it. Just because Javascript can be modified on the client side does not mean that an attacker can reproduce actual user input patterns.

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Answer 2

, , , Javascript, , javascript , Firebug.

, :

• = keydown() keyup(). keydown() keyup() twell keydown().
• : , , , , , (keyup()), (keydown()). keyup() , last_key_time, keydown() current_time - last_key_time

Answer 3

See an example here: http://jsfiddle.net/VDMPt/ source

But, as Andrea said, not worth it, since Javascript is the client side

var xTriggered = 0;
$('#target').keyup(function(event) {
  if (event.keyCode == '13') {
     event.preventDefault();
   }
   xTriggered++;
   var msg = 'Handler for .keyup() called ' + xTriggered + ' time(s).';
  $.print(msg, 'html');
  $.print(event);
});

$('#other').click(function() {
  $('#target').keyup();
});