function getFingerprint(){
  return JSON.stringify([
    navigator.appName,
    navigator.appVersion,
    navigator.userLanguage,
    navigator.userAgent,
    screen.width,
    screen.height,
    screen.colorDepth,
    ((new Date()).getTimezoneOffset()),
    (function(){
      var a=[];			// maybe better with a simple navigator.plugins.map ? Well this works...
      for(var i = 0; i < navigator.plugins.length; i++){
        a.push(navigator.plugins[i].name);
      }
      return a;
    })(),
    ip,
    httpaccept,
    1
  ]);
}