Exactly. Changi is no different than other airports - you can only access the ticketing and baggage arrival areas unless you have a boarding pass.
It does have a massive mall attached to the public area though (Jewel).
It does have a massive mall attached to the public area though (Jewel).
https://travel.stackexchange.com/questions/34818/why-is-secu...
It is helpful in the sense that bottlenecks don't happen earlier on, but I'm not sure it's that great of an approach.