TSA's New Scanners May Force Passengers to Check Carry-On Bags

The Transportation Security Administration's (TSA) new 3D scanning technology, while intended to enhance security screening, may present a new challenge for travelers: the potential need to check carry-on bags. The computerized tomography (CT) scanners, which provide more detailed imaging, feature openings slightly smaller than previous models.

According to TSA spokesperson Daniel Velez, the new scanners have openings that are "under an inch smaller." While standard carry-on dimensions of 22 inches by 14 inches by 9 inches will still fit, passengers attempting to bring larger or expandable bags might find them too big for the new machines. Velez stated that the design is "necessary" for the advanced imaging capabilities that guarantee optimal performance.

"TSA officers are available to assist travelers with larger items or special needs to help ensure a smooth screening process," Velez added.

To navigate this potential issue, travelers are advised to verify their carry-on bag dimensions against airline size guidelines. Velez also suggested using the provided bins for screening, as bags cannot be placed directly onto the belt with the new scanners. Laptops can now remain in bags during screening, a benefit of the new technology.

Despite the potential inconvenience for some, the new CT scanners offer advantages by providing TSA agents with a 3-D view inside luggage, which is expected to reduce the need for manual inspections. Additionally, travel-size liquids will no longer need to be removed from carry-on bags, simplifying the screening process in that regard.

This change comes as the TSA implements other recent adjustments, including new guidelines on packing certain toys containing gel liquids and a potential allowance for full water bottles in carry-ons for TSA PreCheck members at select airports. However, the standard 3-1-1 rule for liquids—containers of 3.4 ounces or less—remains in effect for most travelers.