Not the author but in many parts of Europe it's pretty easy to cross a border without you even realising it. There are many people who live in France and work i

Not the author but in many parts of Europe it's pretty easy to cross a border without you even realising it. There are many people who live in France and work in Switzerland (Geneva or Lausanne), and I'm sure a similar thing happens to Germans who live in their country and work in let's say Basel. How do you account for those international travels?