The rollout of new security scanners across airports has been delayed and inconsistent, which is expected to cause confusion and longer security lines during the busy summer travel season.

Most major airports faced delays in deploying new scanners, with some extending deadlines into 2024, as logistical challenges hindered the transition.

Experts warn that the staggered implementation and inconsistent communication about the new policies will likely increase passenger frustration and security delays.

The original 100ml liquids rule was introduced in 2006 following a terror plot, with the rollout of new 3D CT scanners initially scheduled for December 2022 but delayed to June 2024 due to supply chain issues and the pandemic.

Experts warn that the lack of uniform rules across airports could lead to increased passenger frustration and delays.

Some airports like Birmingham have already upgraded their scanners and received approval to relax the liquids policy, allowing larger containers, while major hubs like Heathrow still advise passengers to follow the 100ml rule.

Edinburgh Airport's CEO highlighted that lifting the 100ml liquids limit, enabled by advanced 3D technology, offers travelers more flexibility while maintaining security.

The new scanners provide more detailed imaging, which can reduce delays by allowing larger liquids to stay in bags, but not all airports have implemented this technology yet.

Passenger non-compliance with the 100ml liquids rule remains a significant cause of security delays, emphasizing the need for clear communication and technological advancements.

Travel authorities recommend passengers check the specific rules at their departure airports to avoid confusion, and suggest carrying empty collapsible bottles or purchasing larger containers after security.