Living is Spain as a non-resident

[georgio]

Yeah definitely, will check with an accountant before.. I don't expect to pay anything more that local property taxes..

 

[GPT]

I wonder if they also (can) have access to airline companies data. With that it would be piece of cake to assess whether someone has been 180+ day somewhere or not. After all, once IG and FB will be known issue, non-idiots will stop using them

The short answer is “yes they can have access to that data”.

the long answer Is a little more complicated. Keep in mind that when the fish is big enough the government will allocate time, money and resources to catch it.

 

[GPT]

If I am not wrong, Just checking your passport , Police can find where you live ?
Every country you visit has entry and exist stamp.

In Schengen, if you are from a country that subscribes to Schengen, you won’t get an entry / exit stamp. If you are from outside Schengen you get an entry stamp in the entry country and an exit stamp in the exit country. In the mean time you can travel in the Schengen area if your visa allows it.

this does however not mean that within Schengen your passport cannot be checked. It’s unlikely but does happen. Without a stamp and just digitally checking your passport (normally done by swiping the document which reads the machine readable part) there is then still a marker left in a database that you entered or exited a certain country at that date and time.