protected function getAcctByRecaller( $recaller )
	{
		if ( $this->validRecaller( $recaller ) && !$this->tokenRetrievalAttempted )
		{
			$this->tokenRetrievalAttempted = true;
			list( $id, $token ) = explode( '|', $recaller, 2 );
			$this->viaRemember = !is_null( $acct = $this->auth->retrieveByToken( $id, $token ) );

			return $acct;
		}

		return null;
	}