Originally Posted by
CPH-Flyer
Even if the conditions says that the passenger has to show ID at the gate, I am fairly certain that the system does check against the birthday details in the booking, or when the passport is swiped at check in.
You put a lot of trust into the SK IT... which is not justified(*). I know at least one person which traveled on a Youth Fare and even though API had to be filed, the system did not single her out.
(*) was some time ago, perhaps they upgraded their software..