My PFD application is currently being contested because they contend that I checked the box but wasn't in Alaska when I filed, even though I filed it from my home PC in Alaska.  The problem is that I, like many other people, regularly use a Virtual Private Network (VPN) which encrypts and "tunnels" your internet connection to protect your privacy from snooping ISPs and prevent location tracking.  It didn't cross my mind to turn it off when I filed my application. It's pretty irritating to now have to fight to prove I was actually in Alaska that day.