Well this will be fun. We already live in a world where law enforcement can easily spoof cell towers and ensnare anyone whose phone trusts said tower nearby, on a geographical basis. We are approaching a brave new world where any rogue nation's satellites could be overhead to provide cell service to anyone.<p>There is a certain area of town where I frequently go, and there is a conspicuously disguised cell tower across the street, and I've suddenly become suspicious of it. As you roam around the countryside, do you trust the cell tower that's providing service to you? What happens when a rogue tower begins to lie about the time of day, or begins to harvest your data traffic for later decryption, or simply analyzes your SMS traffic on behalf of organized crime threat actors?<p>It seems high time we need strong authentication mechanisms between handsets and towers, but on the consumer level, this is not a realistic goal. Have fun out there.