Originally Posted by GUWonder

If getting off at the Hyllie stop in Sweden, it may involve checking your passport biodata page against you, checking passport stamps, and asking about the stay location and purpose of stay. Only the first of those is the most common when encountering passport control in Sweden when taking the train into the country in southern Sweden when using a US passport.

For those arriving train passengers not getting off the train at the Hyllie stop, then the passport control personnel may board the train at the Hyllie stop and perform these passport/ID checks for all passengers before allowing the train to continue onward. At times, it’s this on-board passport/ID check that is most variable in how long it takes to conclude.

It’s a wasteful dog and pony show when it’s performed since it involves so many personnel and vehicles to hassle people who can get into Sweden pretty easily anyway by just coming later or taking another way and asylum/refugee claimants are mostly admitted anyway.