Trouble hooking up head tracker (virtual joystick) to Unity

Hi all,

I recently bought an EDTracker Pro head tracker, and am trying to use it as a camera controller in unity. Unfortunately, most of the guides I've found for this are specific to certain SDKs and products, and I don't really have any idea what I should do. Any suggestions would be great, as I'm totally stumped!

Would I need to make my own script? How might I get Unity to recognise the device's (or its desktop app's) output? Might other SDKs offer what I need - for example, Oculus's kit?

Here's the product page:
http://www.edtracker.org.uk/

Thanks!