[mhw]

In portable systems (laptops and netbooks) the system should be able to work out its location from things like visible WiFi SSIDs and other onboard hardware. This would enable a few cool things:

* Tell the user that their normal WiFi router is probably turned off if it's SSID is not visible while others previously observed in the same location are present.

* Adjust settings based on location: When my laptop is in the office at work, I typically want the sound muted and the lockscreen active. When it's at home I want the sound turned up and the lockscreen disabled.