But it can be used for more than that. It enables parents to see around their kids´s Minecraft creation. There is so much you could do. For example, you could see your colleagues PowerPoint, on your phone.
Installation and use:
First, download and run the app. Then go to http://2boysandhats.github.io/minemon/ on your computer, and download and run it. Then, type the 'app code' (displayed by the app at startup) into the desktop app and press connect.
Awesome! Does exactly what is says in the description -mirrors the laptop display on your phone. Linking is secured with a passkey and only available to people on the same home network.