TSA CT scanners are changing what travelers should expect before their bags ever reach the airport gate. According to the Transportation Security Administration, the machines create detailed three dimensional images of carry on property, giving security officers the ability to rotate an image and inspect a bag from multiple angles without immediately opening it. Think of the technology as a digital unpacking tool. Instead of relying only on a flat X ray view, officers can examine layers of what is inside the bag and get a clearer picture of objects that may be stacked, hidden or difficult to identify.
The rollout is already reaching a major portion of the country. According to AFAR, TSA had installed 1,162 CT scanners at 296 airports as of July 6, 2026. However, the equipment is not necessarily available at every checkpoint or in every lane inside those airports. That means one traveler could be told to leave a laptop packed while someone in another line at the same airport may still have to remove electronics. TSA CT scanners are being introduced gradually, so passengers should follow the instructions given by the officer working their specific lane instead of assuming every checkpoint now operates the same way.
When passengers enter a CT equipped lane, the change may feel like an upgrade. According to a TSA technology announcement, travelers can generally leave laptops, tablets, and other large electronics inside their bags. Compliant liquids can also remain packed. TSA guidance says roller bags and other carry-on items must be placed inside a screening bin instead of being placed directly on the conveyor belt. That detail matters because the scanner and bin system are designed to control how each bag enters the machine.
Leaving liquids inside the bag does not mean travelers can start bringing full bottles of lotion, perfume, or drinks through security. According to the TSA travel tips page, the 3 1 1 rule still limits most carry-on liquids, gels, creams, aerosols, and pastes to containers holding 3.4 ounces or less. Those containers must fit inside one clear quart-sized bag. TSA CT scanners may change whether that liquids bag needs to be removed, but they have not eliminated the size restriction.
The biggest surprise may come from the physical size of the machines. In a July 2026 announcement about new equipment in Juneau, the TSA warned that CT units have slightly smaller entry tunnels and that some larger carry-on bags will not fit. The agency recommended checking large items with the airline. This creates a new headache because the airline baggage sizer and the TSA scanner tunnel serve different purposes. A suitcase may appear reasonable for the overhead bin but still be too wide, too rigid, or too overstuffed to enter a particular scanner comfortably.
That problem could also become expensive. According to the Federal Aviation Administration, travelers should confirm their airline’s maximum carry-on dimensions because baggage rules can vary by carrier. The FAA says the maximum for most airlines is 45 total linear inches, although each airline controls its own limits. TSA has not explained whether every bag that fails to fit will require a passenger to return to the airline counter. Still, anyone traveling with an oversized duffel, expanded roller bag, or bulky equipment case should leave additional time and prepare for the possibility of checking it.
Photographers have an even bigger reason to pay attention. According to the TSA film guidance, passengers carrying undeveloped film or cameras containing undeveloped film should ask for a hand inspection at the checkpoint. Kodak warns that newer CT equipment uses higher intensity X rays that can fog and ruin unprocessed film, including film that has already been exposed but has not yet been developed. Kodak says the damage can occur after a single scan. Travelers carrying instant film, disposable cameras, professional rolls or film already loaded inside a camera should tell an officer before the equipment enters the scanner.
The technology represents a massive, years-long investment rather than a sudden checkpoint experiment. According to the TSA, the agency awarded contracts worth up to $781.2 million for CT equipment and maintenance in 2022. In 2023, the agency announced additional awards worth up to $1.3 billion. TSA has said it plans to continue replacing older X-ray systems as funding permits, meaning more travelers will encounter the machines over time.
TSA CT scanners should eventually mean less unpacking, clearer bag images and more advanced threat detection. For travelers, the smartest move is to pack a compact carry-on, keep liquids within the current rules, place the entire bag inside a bin when instructed, and listen closely because procedures may vary by lane. Anyone carrying undeveloped film should request a hand inspection before the bag reaches the belt. The technology may make airport security smoother, but showing up with the wrong bag or sending irreplaceable film through the machine could turn that convenience into a costly travel lesson.
