At AMS/EHAM in the Schengen area (piers B and C) you step off one flight then walk straight onto another with no further security. There is security only for people going from Schengen to rest-of-world and at the gates in the non-Shenghen area. Pier D gates can be configured for both access from the Schengen area (upstairs) and the non-Schengen area (downstairs). These gates have the security hardware but it is unused in the case of a Schengen flight.