Abstract: A localhost computer is network connectable with a website-hosting server, and is for use with an appliance. The localhost computer includes a localhost processor assembly and a non-transitory processor-readable localhost memory tangibly embodying a browser-assigned storage section, a browser application, and a control program. The browser application is configured to urge the localhost processor assembly to (A) access the browser data, and (B) not access contents of a remainder of the non-transitory processor-readable localhost memory beyond the browser data. The control program is configured to urge the localhost processor assembly to: (A) access the browser data stored in the browser-assigned storage section, and (B) control the appliance, in which a type of control to be imposed upon the appliance depends on the contents of the browser data that was accessed.