Lol do you want to know how the pollsters at YouGov check what country you're from? They ask. No need to provide a drivers license or any other documentation. No need to prove you are a real person. You could literally be sitting on Manus Island posting as John Smith, Mary Joe and 100 other fake people and no-one would ever know. Unless of course you want the $25 gift voucher you get for filling out 100 surveys!
Do you feel stupid yet? If you don't then you should.
