Unity App / Game to run in background, hidden

Hi All,

Hope you are all well! - I have a dilema, I need to create a simple application which will work on Linux, Mac and Windows and I want to manage this using one solution. As I already use Unity I thought why not use unity. Th dilema is simple. If I was to use Visual Studio 2010 Pro I could simply create a application which is hidden, not in the task bar and runs my timer in the background without the logged in user ever knowing.

Before anyone kicks off, here is the reason.

We are running a update database which is updated every time a user loggs into our network. This script fires off a lot of local information about our users. This is for our internal security policies. We need a way of running an application which our clients can roll our using Group Policy, hence the need for a .DMG or EXE file.

My question is,

How can I create a application in Unity which is HIDDEN, Does NOT show up in the Task Bar.

Thank you in advance.

Regards,