public function create()
	{
		// create a new session
		$this->keys['session_id']	= $this->_new_session_id();
		$this->keys['previous_id']	= $this->keys['session_id'];	// prevents errors if previous_id has a unique index
		$this->keys['ip_hash']		= md5(\Input::ip().\Input::real_ip());
		$this->keys['user_agent']	= \Input::user_agent();
		$this->keys['created'] 		= $this->time->get_timestamp();
		$this->keys['updated'] 		= $this->keys['created'];

		return $this;
	}