Following some idle curiositity I googled about gaining 2nd passports. The country this query is based on is Portugal but other than that is not in itself pertinent. So please lets not get wrapped up in PT specifically, and neither take this too seriously. This is mere idle speculation etc
PT's requirements are amongst other things:
During the first year of the residence permit you will be required to spend a minimum of four months in the country and can’t leave for more than 6 consecutive months at a time.
After the first year, your temporary residence permit renews in two-year intervals.
During each two year period you have to spend at least 16 months in the country and can’t can’t leave for more than 6 consecutive months.
Given PT shares a land border with ES, which shares a land border with FR and from theer the rest of mainland Europe onwards etc ... and PT is in Shengen...
How would PT ever know if you were resident or not? You could bugger off over the border and pretty much go anywhere within Schenegen particularly ... even probably coming to the UK where uoud be processed by UK Border people you probably wont end up on anything "obvious" to PT/have a passoport franked if you were most European countries at least etc etc etc. ?
Merely idle curiosity
In many countries everyone is required to officially register/deregister at an address. So this would be a good evidence if you follow the rules.
Of course, in practice you may choose not to deregister, but if you are renting then your landlord or the next tenant may do it for you (as happens in Germany).
Consequently, in Germany anyway, there is a small cottage industry where property owners will register people who don't live there. We have been approached to do this, but didn't fancy it.
Just checked. EU citizens are required to register after 3 months in PT, and can even do it earlier. https://europa.eu/youreurope/citizens/r ... dex_en.htm
So pretty clear there will be some official registration process for non-EU. Still may not prevent you doing one once you're registered, I suppose.
But on that score, you would need to be careful how much they really need to prove it. It's likely they could just reject your application, and the onus is on you to prove beyond doubt that you hadn't been sneaking out.
ursaminortaur wrote:Citizenship and residency are different. Just having residency does not allow you freedom to move across EU borders
When I met my GF in Germany, she had residency for another EU country so was allowed 3 months in, 3 months out in Germany. Required to register/deregister at the Auslandersamt and stiff fines and other penalties if caught in violation. I don't know rules in other countries but at least in my experience what you say ain't so.