The TSA is introducing new CT scanners that create a three-dimensional image of what is inside a bag, but the machines come with a smaller opening than older scanners. A TSA spokesperson told 13 that the design change is necessary so the equipment works correctly.
That matters now because the rollout can change how travelers pack before a flight. Bags that fit the airline carry-on standard of 22 inches by 14 inches by 9 inches should fit the scanner, but larger bags may have trouble entering it. Travelers with those bags could be told to check them instead of carrying them through security.
The new equipment is meant to make screening less hands-on. The TSA says the scanners can show officers a 3-D X-ray image on a monitor and let them manipulate the image to get a better view of the contents, which can reduce the number of carry-on bags that have to be opened and inspected. It also means travelers should no longer need to unpack laptops and other electronic devices before screening.
The trade-off is straightforward. The TSA says the better imaging comes with a smaller opening, and that not all carry-on items will fit through the machine. For passengers who like to push the limits of carry-on size, that could turn an airport security line into an unexpected bag-check counter.
The agency is strongly recommending that travelers stick to airline bag sizes, because those bags are the safest bet for getting through the new scanners without a problem. What is not yet clear is where the machines will be installed first or how quickly the rollout will reach more checkpoints, leaving travelers to find out at the airport whether their bags make the cut.
