Beside the above, this server-client type app will give you the ability to log off people and turn your computer off. Another best things about this app is still work regardless your server inaccessible directly from the internet. Since PC Monitor app does not sit behind a firewall not owning a routable iP address. Here is what the app developer says about it:
The application communicates with the server using a secure encrypted connection and the PC application installs as a service and it starts automatically when your PC starts.
Get the PC monitor Android app now, if you like, from its official site here.