Behind the sliding doors and conveyor belts, airport baggage systems are ruthlessly precise—and surprisingly fragile. According to Dublin baggage handler John, the colorful ribbons travelers tie to their suitcases can jam or confuse automatic scanners, forcing bags into slow manual processing. While you’re buckling in for takeoff, your luggage might still be sitting in a back room, waiting to be cleared. Old stickers can be just as risky, tricking scanners into misreading destination codes and sending your belongings on an unintended detour.

Then there’s marzipan, the innocent-looking treat that mimics the density of explosives on security scans. Pack it, and you may be dramatically summoned off the plane for a full bag search. The fix is simple but crucial: choose bright or patterned luggage instead of black, personalize with paint or flat stickers that don’t dangle, remove outdated tags, and place your suitcase wheels-up on the belt. Small choices can mean the difference between a smooth arrival and a travel nightmare.