Originally Posted by
WHBM
...what the implications are for airports, where many have dismantled border control equipment for Schengen arrivals, and segregated these from non-Schengen ones, when such checks are reinstated. Likewise for departures within Schengen, where full visa etc checks may be required rather than just ID checks.
Not many, since flying is not the preferred mode of transport for smuggling and organised trafficking. And I can't think of an international airport that states to be exclusively Schengen departures/arrivals. EU passengers would pass through e-gates, the rest in a queue.