gistfile1.js

// This goes on the signup page
$(document).ready(function () {
  $.cookie('user_is_on_signup', "circle");
});


// This goes on every page
$(document).ready(function () {
  
  $.cookie('user_is_on_signup', "square");
  
  setInterval(function () {
    var user_is_on_signup = $.cookie('user_is_on_signup');
    
    if(user_is_on_signup == "circle") {
      //send them back to the signup page or whateva
    } else {
      // do nothing
    }              
  }, 2000);
});