Hi RadioGirl,
Originally Posted by
RadioGirl
Most people know that AMS has security at each gate rather than centrally. [...] Furthermore the number of gates at Schiphol would make remote viewing for all WBIs a logistical nightmare.
[...]And the sheer cost of this is breathtaking. There must be more than 100 gates at Schiphol, each requiring 1 or 2 WBIs at $170,000 each.

One clarification: gate security only applies to non-Schengen flights. For the Schengen flights, there are two central security checkpoints (one for originating passengers and one for connecting passengers).
Cheers,
GenevaFlyer