I'm pretty sure that's not possible. I seem to recall some people who were traveling "outside the US" were unable to take the online Part 61/107 test because of their "Region" settings. I'm not saying that can't be "Tricked" but that's extra work for nothing.
if the system is not doing any validation, it's easy. how will the system stop someone from estonia from going to www dot faahobbyonlinetest dot gov and clicking a few buttons and printing the results? unless they require info like a (usa) credit card or they valid your name and address.....
it's like when you travel overseas, you can use your verizon sim card or you can buy an orange sim card and use it in france. foreigners who travel to the usa and don't want to bother jumping thru the many hoops that make it too difficult to bring their drone but want to at least be covered for the minimum, just take the usa test. no way that test is going to be closed to everyone except american citizens. there's nothing stopping you from registering at faa.gov right now with a usa physical address and a credit card which anyone can get; from what i recall there aren't even any perjury warnings. people from all over the world shop on ebay and amazon and those are the us websites.
these days, i wouldn't call a vpn a trick. it's pretty much mainstream and i'm sure there will dozens of sites that will explain how to do it all...for free.
so there's that and then why even take the test. just print "copies" of the results and pass them around. will the results have barcodes or qr codes and if they do, what for? so the fremont county sheriff's department can scan them in the wyoming state database and valid it?
this wasn't thought thru....which is fine for me but i think it puts us all in a bad spot.
i could be wrong, maybe the online test requires you to put your faa reg # where it will mark you as test passed or lock you out for 30 days if you fail. that would be better, i guess. still not a fan. if i am a hobbyist and i pass the test, how many drones can i "sponsor" before i get flagged in the system?