My modifications to jquery.myPass-1.0.js

jquery.myPass-1.1.js

/* ---------------------------------------------------------------------------------------------
* myPass v1.0 - jQuery password-hiding iPhone-Style
*
* Copyright (c) 2009 Oliver Storm, Stefan Huissel( http://www.mysrc.de )
*                       Feel free to redistribute the script/modify it, as
*                       long as you leave my infos at the top.
*
*
* Date Thu, 30 Jun 2009
*
* Defaults:       charReplace -> Unicode for the symbol that will be displayed
*                 instead of the character. You can find a good overview here:
*                       http://www.fileformat.info/format/w3c/entitytest.htm?sort=Unicode+Character
*
*                       charDuration -> Duration how long the last character will be shown when no
*                       further input is made.
*
* bchesley      02/10/2012 - make sure your inputs have IDs that are different than their names!
*               e.g. - <input type="text" name="answer" id="answerID">
*
* rhughes         10/17/2012 - added binding to paste event so pasted pws are masked
---------------------------------------------------------------------------------------------- */
(function($){
 
      $.fn.myPass = function(options) {
 
            var defaults = {
                  charReplace : '%u25CF',
                  charDuration : 1000
            }
 
            var opts = $.extend(defaults, options);
            var   aktiv = null;
 
            $(this).each(function(){
                  tempField = $(this).attr('name');
                  $(this).attr('name','tmp_'+tempField);
                  $(this).parent().append('<input name="'+tempField+'" id="'+tempField+'" type="hidden" value="" />');
 
            });
 
 
            $(this).bind("keypress", function(evt) {
                  clearTimeout(aktiv);
                  var hiddenPass = '';
                  var currentValue = '';
                  if($(this).val().length > 0){
                        currentValue = currentValue + $(this).val().slice($(this).val().length - 1);
                        for (i=0; i<=$(this).val().length-1; ++i){
                               hiddenPass = hiddenPass + unescape(opts.charReplace);
                        }
                        lastLetter = $(this).val().charAt($(this).val().length-1);
                        if(lastLetter != unescape(opts.charReplace)
                             saveString(lastLetter,this);
                        }
                        $(this).val(hiddenPass);
                        aktiv = setTimeout("hideAll('" + $(this).attr('name') + "')", opts.charDuration);
                        
                  }else{
                        currentValue = $(this).val();
                        var tempField = $(this).attr('name');
                        var hiddenID = tempField.substr(tempField.indexOf('_')+1);
                        $('#'+hiddenID).val('');
                  }
 
            });
           
            $(this).bind("keyup", function(evt) {
                  if($(this).val().length > 0){
                        if(evt.which == 8){
                              deleteLast(this);
                        }
                  }
 
            });        
 
            // added this so that the paste event is masked
            $(this).bind("paste", function(evt) {
                  clearTimeout(aktiv);
                  var hiddenPass = '';
                  aktiv = setTimeout("hideAll2('" + $(this).attr('name') + "')", opts.charDuration);
            });  
 
            hideAll2 = function(el){
                  var hold = '';
                  //get everything including the masking
                  var newPaste =  $('input[name='+el+']').val();
 
                  //get the name of the hidden ID
                  var hiddenID = el.substr(el.indexOf('_')+1);
                 
                  //save the hidden value
                  hold = $('#'+hiddenID).val();
                 
                  //set the value of the concatenated hold & the substring containing the unmasked text
                  $('#'+hiddenID).val(hold+newPaste.substr(hold.length, newPaste.length-hold.length));
 
                  var hiddenPass = '';
                  for (i=0; i<=$('input[name='+el+']').val().length-1; ++i){
                              hiddenPass = hiddenPass + unescape(opts.charReplace);
                        }
                  $('input[name='+el+']').val(hiddenPass);
            }
 
            hideAll = function(el){
                  lastLetter = $('input[name='+el+']').val().charAt($('input[name='+el+']').val().length-1);
                  var hiddenID = el.substr(el.indexOf('_')+1);
                  var tmpstr = $('#'+hiddenID).val();
                  $('#'+hiddenID).val(tmpstr + lastLetter);
 
                  var hiddenPass = '';
                  for (i=0; i<=$('input[name='+el+']').val().length-1; ++i){
                              hiddenPass = hiddenPass + unescape(opts.charReplace);
                        }
 
                  $('input[name='+el+']').val(hiddenPass);
            }
 
            saveString = function(str,el){
                  var tempField = $(el).attr('name');
                  var hiddenID = tempField.substr(tempField.indexOf('_')+1);
 
                  var tmpstr = $('#'+hiddenID).val();
                  $('#'+hiddenID).val(tmpstr + str);
            }
 
            deleteLast = function(el){
                  var tempField = $(el).attr('name');            
                  var hiddenID = tempField.substr(tempField.indexOf('_')+1);              
                  var tmpstr = $('#'+hiddenID).val();                  
                  var length = $('#'+hiddenID).val().length;                    
                  $('#'+hiddenID).val(tmpstr.substring(0,length-1));
            }
 
      };
 
})(jQuery);
 

I did not write this code, but I modified it so that it works with the paste event & that the backspace works properly across browsers.

One further note, with FireFox, you need to add some code on the for target to filter the masking character out.