Handling guests user in Token::getToken() in PrestaShop

Tools.php

<?php
public static function getToken($page = true, Context $context = null)
{
    if (!$context) {
        $context = Context::getContext();
    }
    if (!Validate::isLoadedObject($context->customer)) {
        $unique = $context->cookie->id_guest;
    } else {
        $unique = $context->customer->id.$context->customer->passwd;
    }
    $unique .= Tools::getRemoteAddr();
    if ($page === true) {
        return (Tools::encrypt($unique.$_SERVER['SCRIPT_NAME']));
    } else {
        return (Tools::encrypt($unique.$page));
    }
}