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Is Whole Body Imaging the Answer to Passenger Screening?

01/06/2010 -In the aftermath of the botched attack to blow up a Detroit-bound airliner on Christmas,the media and security analysts have seized upon full body scanners, or whole body imaging technology, as a solution to passenger screening problems.

The controversial scanning technology, which allows security officials to peer underneath a passenger's clothes, has seen a big push since the attack because 23-year-old jihadistUmar Farouk Abdulmutallab had sewn the high explosive he tried to detonate on the plane in his underwear—an innovation that eluded airport security in the Netherlands and Nigeria.

As former homeland security chief Michael Chertoffargued in The Washington Post, whole body scanners are one more critically important layer of security that can detect contraband metal detectors can't.

"Watch lists surely are an important layer, as is intelligence-sharing, but others, such as the deployment of advanced detection technology, are just as important," he wrote. (Chertoff, however, also has a conflict-of-interest when promoting whole body imaging. One of the clients of his security and risk management firmis a manufacturer of whole body imaging technology.)

ButChris Yates, an aviation security analyst with Jane's Information Group,wrote an article for, reminding readers that these full body scanners, while certainly a "game changer," are not  "the panacea to the threats we face today."

Why? Because of the human element.

"Full body scanners are often only as good as the people paid to be behind the screens, analysing the succession of complex images scrolling in front of their eyes," he writes. "Staff monitoring screens typically only do so for a two-hour stretch - one of a rotation of duties to stop them from getting bored."

Yates believes the future of screening is technology that reduces the possibility of human error to zero and discusses some emerging technology attempting to do just that. He also argues for passenger profiling that doesn't need to take into account the race or religion of the passenger.

The aviation industry routinely collects vast amounts of data on our traveling habits that can be used to build up an extremely useful profile. Information regarding the destination, frequency and duration of overseas trips allows those tasked with ensuring the security of flights to positively identify passengers who may travel to regions of the world determined to be high-risk for example. That enables higher levels of security to be applied to that person as he or she passes through the airport.

In the end, Yates argues for a smart blend of the best detection technology and the best profiling techniques to sniff out those that target the commercial aviation sector.

♦ Photo of whole body imageby TSA Blog