The present invention relates to a home appliance which can communicate with an outside of the home appliance and an online system including the same. According to embodiments of the present invention, an online system may be provided, including a server, a home appliance provided with remote control activation input means and connected to the server to enable communication therewith, and an external terminal having application for remote control of the home appliance through the server, wherein the home appliance is remotely controlled through the external terminal only if the remote control activation input means is selected.