By early 2026, several major international hubs have fully "scrapped" the 100ml liquid rule thanks to the widespread installation of Computed Tomography (CT) X-ray scanners. These scanners create high-resolution 3D images that allow security to distinguish between harmless liquids and potential explosives. Notable airports include London City (LCY), London Teesside (MME), and Helsinki (HEL), which now allow up to 2 liters of liquids in carry-on luggage. Many larger hubs like London Heathrow (LHR) and Amsterdam Schiphol (AMS) have completed their rollouts across most terminals, though some lanes may still use older tech. A 2026 "pro-tip" is that even if your departure airport has scrapped the rule, you must still comply with the 100ml limit if your return or transfer airport still uses legacy scanners. Always check the "Security" section of the airport's official website 24 hours before you fly to ensure you don't have to discard expensive toiletries during a connecting flight.