TSA's new CT scanners may pose a problem for some carry-on bags: What to know

The Transportation Security Administration is rolling out new computed tomography (CT) scanners at hundreds of U.S. airports, marking a significant shift in airport security protocols. These advanced machines, capable of generating detailed 3D images of carry-on luggage, are intended to improve threat detection by enabling agents to examine items more thoroughly. However, the deployment of the technology has raised concerns among travelers, particularly regarding compatibility with certain types of carry-on items and potential costs associated with handling them. The CT scanners, which replace traditional X-ray machines, feature narrower entry tunnels compared to their predecessors. This design adjustment means that some larger carry-on bags previously allowed through standard X-ray systems may now be incompatible with the newer models. According to the TSA, travelers are advised to check larger items with their airlines rather than attempt to bring them through security. While the agency states that some CT scanners are equipped with smaller openings to accommodate more powerful X-ray components, specific details on how staff will handle oversized items remain unclear. Travelers with large carry-ons may need assistance from TSA personnel, though it is uncertain whether this will involve redirecting them to airline check-in points. Another notable issue affecting specific groups of travelers involves photography equipment. The TSA has confirmed that undeveloped film, whether stored separately or already loaded into a camera, can be damaged by the increased radiation exposure from CT scanners. This poses a risk to both amateur and professional photographers, as the advanced imaging technology emits higher levels of X-rays than conventional X-ray machines. As a precaution, the TSA recommends that individuals carrying undeveloped film or film-based cameras opt for manual inspections instead of placing their belongings through the scanners. This advice aligns with longstanding recommendations from the agency, which have urged photographers to seek hand inspections for over a decade. The rollout of CT scanners has progressed steadily, with the TSA having installed 1,162 units across 296 airports as of early July. These installations span major transportation hubs, although the presence of CT scanners is not yet universal within every security checkpoint. The agency continues to expand its network, supported by contracts with multiple security technology providers. Despite the widespread deployment, the availability of CT scanners varies by location, meaning some travelers may still encounter traditional X-ray systems during their journeys. The introduction of CT scanners represents a broader effort by the TSA to enhance security measures while improving the efficiency of passenger screening. By leveraging sophisticated algorithms, the new systems aim to identify potential threats more accurately and reduce the need for manual checks. However, the transition has also introduced logistical challenges, requiring travelers to adjust their packing habits and exercise caution with sensitive items. The TSA has emphasized that its goal is to streamline the screening process while maintaining high standards of safety. Moving forward, the TSA is expected to continue refining its implementation strategy, addressing feedback from travelers and industry stakeholders. Further updates on how the agency plans to manage oversized carry-ons and protect photographic materials may emerge as the technology becomes more widely adopted. For now, travelers should remain informed about the capabilities and limitations of the new CT scanners to avoid disruptions during their travel experiences.