He shows that in the article too, but it's really just a historical curiosity with little impact on day to day living beyond a few trifles. Mail and taxes have

He shows that in the article too, but it's really just a historical curiosity with little impact on day to day living beyond a few trifles. Mail and taxes have been solved long ago; all dwellings have a 'main' front door which determines which country's laws and taxes apply — it's not something that changes arbitrarily. It's reportedly great for tourism though.