I know at the Oslo airport it's fairly common to never show ID or your boarding pass to a person if you're flying within Schengen. --Check in at the automated kiosk, put on your own luggage tag, scan the tag at the bag drop, and you're done there. Passing through security means scanning your boarding pass rather than showing it to someone most of the time, and finally many of the gates have automated doors where you scan your boarding pass again to board the plane. The same applies to other Scandinavian airports as well.