&gt;&gt; if &quot;familiar interface&quot; is your only requirement, I&#x27;d suggest to install a door handle or light switch<p>This isn&#x27;t far from the truth. You&#x27;d be better of providing a console with clearly labelled buttons and switches. No operating system exposed to the user. It&#x27;s not very practical to implement, let alone make changes to, but it would be more dummy proof than any desktop application.<p>This is also why you see a lot of kiosk-like, full-screen applications, with no ability to actually work with the desktop interface itself. A single kiosk application that cannot be alt-tabbed out of, providing screens that are easy to navigate.