Originally Posted by
GUWonder
Transits at AMS that involve crossing from Schengen to non-Schengen flights or crossing from non-Schengen to Schengen flights involve passport control.
AMS border control is very strict. You have show your passport & boarding pass before you enter non-Schengen or Schengen areas. If you connecting the flights in EU or if you leave from Europe. You are required to show your boarding pass.