- TSA is expanding newer airport screening tech
- 3D CT scanners can image carry-on bags more thoroughly
- Some items no longer need to come out at security
- Carry-on size limits may matter more with the new machines
- The rollout is part of a wider move away from older X-ray systems
- Other airports around the world are already using similar scanners
The TSA’s latest screening upgrade is changing the airport game in a big way, but it may also change what counts as a workable carry-on. New 3D CT scanners are designed to make checkpoints move faster while giving agents a much sharper look inside each bag, and that convenience comes with a catch for travelers who like to push the limits on bag size.
These scanners create a detailed three-dimensional image of the contents inside a carry-on, which means agents can inspect bags without making passengers unpack everything at the belt. Laptops and liquids are part of that smoother process, since the system is built to let those items stay put. The result is a less frantic security lane and, in theory, fewer awkward scrambles to repack belongings under pressure.
The tradeoff is that the equipment itself is smaller than what many travelers may expect. The new scanners measure 24.5 inches wide and 16.5 inches tall, so a bag has to physically fit inside the machine to be screened properly. That puts fresh pressure on oversized carry-ons, especially those that already flirt with airline limits.
For bags that stretch beyond about 22 inches long, 14 inches wide, and 9 inches tall, the odds rise that they will be pulled aside or checked instead. That is where a lot of travelers could get caught off guard, because a bag that used to glide through one checkpoint may suddenly be too bulky for the next. A suitcase that looks harmless enough at home can become a hassle the moment it reaches the security line.
The appeal of the new setup is easy to see. Instead of relying on flat, two-dimensional images, the scanners use more advanced X-ray technology to build a fuller picture of what is inside the bag. That gives TSA officers a better shot at spotting explosives and other threats, including some liquids, without turning every screening into a mini unpacking session.
Daniel Velez, a TSA spokesperson, said the point is to speed up screening, reduce hands-on bag checks, and make the whole experience smoother for travelers. That is a pretty attractive promise for anyone who has ever stood in a long line watching shoes, bins, and backpacks pile up in a chaotic mess. When the technology works the way it is supposed to, it can shave off frustration at one of the least enjoyable parts of flying.
There is still one annoying exception travelers should keep in mind. Cameras and film still need to be removed before going through these machines, so the new tech is not a total free pass for every item in the bag. Even with the upgrades, some old-school security rules continue to hang around.
The United States is not exactly inventing this idea from scratch. Airports in other countries have already been moving in the same direction, and some are planning even broader use of CT screening over time. Brussels Airport, for example, has been working toward having all of its screening lanes use CT scanners by 2029.
In the U.S., the rollout is already well underway, with more than a thousand CT scanners spread across hundreds of airports by mid-2026. The long-term plan is even bigger, aiming to replace older X-ray machines with a newer generation of screening gear. That means the era of tossing any old carry-on into the lane and hoping for the best may be winding down faster than a lot of travelers realize.
