How new CT scanners ended Heathrow 100ml liquids rule

image via New Scientist

January 29, 2026, 12:00 PM

• •Heathrow Airport has upgraded its security with CT scanners.
• •Passengers can now keep electronics in their bags.
• •Liquids up to two liters are now allowed.
• •CT scanners create 3D models of carry-ons.
• •Automated algorithms help spot threats.

Heathrow Airport has upgraded its security checkpoints with new CT scanners, allowing passengers to keep electronics in their bags and carry liquids up to two liters. This change is made possible by advanced imaging and software that create 3D models of carry-on bags, enabling security officers to better identify potential threats. The new scanners utilize automated algorithms to spot dangerous items without requiring passengers to unpack, marking a significant improvement over the old 2D x-ray systems. While Heathrow leads the way, other airports are still using the older protocols, so passengers should keep their Ziploc bags for now.

Read original article