My flying club operates from an international airport - Rotterdam in fact. We've had to implement all sorts of security regulations and they've been very pragmatic about it.
As others have said, as pilot you've got to identify your reason for being airside. That is accomplished, in our case, by showing your pilots license plus (because the pilot license doesn't have a picture) some sort of picture ID - your passport in most cases.
The passengers need to be accompanied by the pilot, and need to be able to show ID - passport again.
A few selected individuals of our club, instructors mostly, will be eligible for an airport pass which they can use instead of their license/passport combo. The airport authorities decided not to give each of the 1000+ private pilots at Rotterdam an airport pass simply because the administration involved would be overwhelming. And I don't believe anybody ever suggested the idea of one-time passengers to be issued a pass.
In the Netherlands, the airport pass is only issued after a background check by the MIVD - the Dutch Secret Service This background check, plus the issue fee of the pass, would be something like 70 euros minimum and that's actually fairly cheap, as far as I'm concerned. Nevertheless, with something like 600 members in my flying club alone it would be a severe drain on resources.
As others have said - forcing everybody who goes airside onto an airport ID pass is NOT what the EU regulations say. Yes, you need to prove you have business airside, and you need an official ID, but an airport pass is not the only means of achieving that goal.