Agreed. Then it could occur within 100 metres of the actual border. (Still 100 metres of law breaking though…).
So Asterix’ scenario being GPS based would be conditional.
But then another, much bigger, and much more fundamental problem crops up: by the end of next year the first GPS satellites will start to fall out of the sky. Don’t forget they’ve been up there for almost 30 years now, and that orbits decay. They are already down to 24 now, from the original 32 (28 + 4 spares; the system was designed to function on 28 active satellites; 8 have already packed up). So in 2 or 3 years there won’t be enough working GPS satellites up there anymore for the system to work. And there’s no money – or even plans – for a replacement system. Obama cut all NASA’s big programs, remember? Orion rockets, Moon missions, Mars missions, asteroid/comet missions, Saturn missions, and GPS. Among other programs. He had to. He’s broke. America is bankrupt. 13 Trillion deficit!
(Kinda ‘funny’ really: first the USA destroyed the Soviet Union by outspending it, effectively bankrupting the USSR, and then the USA simply continued outspending, but themselves; and of course bankrupted themselves; the destruction is on-going).
Meantime the rest of the world has had 25 years to observe how the US applied/applies GPS for political purposes. To apply pressure. And of course for waging war.
Try turn-by-turn navigation in PyongYang, Tehran, Baghdad, Damascus. It doesn’t work. Na-nana-na-na!
But it doesn’t work in some allies’ countries either, like e.g. Riyadh (Saudi Arabia). Because it would be too convenient for radical suicide bombers who inexplicably disagree with the dictatorial monarchy (actually a plutocracy/theocracy) to blow up a couple dozen of the 5,800 ‘princes’ they have overthere.
And what happens with GPS overthere can happen overhere too, at the flick of a switch in the Pentagon. So the rest of the world isn’t keen at all to be dependent on that American system. So they build their own. Russia’s already got GLONASS, started in the Soviet era. But it survived (kinda hibernating) the regime change (one fascist plutocracy for another). And it was revived and is steadily expanding. Europe’s got Galileï, of which the first 2 or 3 satellites are already up. China already have a couple satellites of their Baidu system up there. India and Japan have formally committed to building their own satnav systems. And Australia, South Korea, and Brasil have announced that they are seriously looking into the possibilities too.
All are systems that intend to put networks of between 19 and 60 satellites in orbit!
Note that they are all countries with vast mineral and/or manpower resources and a very bright economical future. They can/will be able to afford programs like this. The USA won’t.
So it looks as if in, say, 5 years time the shoe will be on the other foot: the USA, having no functional satnav system anymore, will have to go begging, hat in hand, to get satnav data from the countries that do have functional (second generation) satnav systems.
Anyway, a lot will change in satnav land in the coming decade. That much is clear.