[hectormalot]

Exactly. I can only add that the borders are indeed very open. I took a plane from Frankfurt to Amsterdam last week without even showing my passport once. (boarding pass yes, passport no)

There are exceptions, e.g.:

* Switzerland, although part of Schengen, will sometimes do boarder checks

* The UK, although part of the EU, is not part of Schengen and will require ID for entry and exit