The US Transportation Security Administration (TSA) at Quad City International Airport (MLI) in Illinois has begun using an advanced computed tomography (CT) checkpoint scanner for 3D imaging.

The system uses sophisticated algorithms for explosives detection and creates a 3D image that can be viewed and rotated on three axes for visual analysis by a TSA officer.

In case a bag requires additional screening, TSA officers will check it to ensure that no threat item is kept inside.

The 3D imagery enables on-screen image manipulation for TSA officers to get a better view of a bag’s contents, without opening a carry-on bag.

TSA deputy federal security director for Downstate Illinois Jeff Hardacre said: “This new technology provides critical explosives detection capabilities and improves the ability for our TSA officers to determine whether an item inside a carry-on bag is a possible threat.

“This state-of-the-art technology represents an improved security threat detection capability at the checkpoint and it also reduces the need for pulling aside a bag to be opened, which reduces a touchpoint during this pandemic.”

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The scanner works similarly to the equipment that is used to scan checked baggage for explosive devices.

It has been designed to fit at checkpoints and creates a clear image of a bag’s contents.

The system can automatically detect explosives, including liquids.

By shooting several images with an X-ray camera spinning around the conveyor belt, the scanner provides three-dimensional views of the contents of a carry-on bag to TSA officers.

TSA has noted that the checkpoint CT technology should result in fewer bag checks.

In November, TSA at Daytona Beach International Airport (DAB) in Florida, started using an advanced computed tomography (CT) scanner at its security checkpoint.

TSA also deployed a credential authentication technology (CAT) unit that authenticates the validity of travellers’ identifications (IDs), along with their flight information, in near real-time.