The new TSA security scanners are getting smaller. Your carry-on bags will be fine.

Your carry-on bag should fit in the new TSA scanners. Joe Raedle/Getty Images The TSA has been rolling out an enhanced 3D X-ray scanner for around a decade. It speeds up security, but the opening is smaller than the machines it replaced. Some people worry their carry-on bags will no longer fit. They don't need to worry. The Transportation Security Administration's new X-ray scanners are better in almost every way for travelers, except one: The smaller opening may not fit some carry-on bags. The new 3D computed tomography (CT) X-ray machines have been around for a decade, and started rolling out in earnest in 2022. The multibillion-dollar project aims to make security screening more effective and speed up lines by allowing passengers to leave items like laptops and toiletries in their bags. The catch is that the opening is about half an inch smaller than the machines it replaced.