TSA plans to double its use of whole body scanners

Agency also likely to make scanning compulsory for all airline passengers, GAO says

A new report from the U.S. Government Accountability Office shows that the Transportation Security Administration plans to install more than double the number of whole body scanners at U.S. airports than originally planned.

Instead of deploying 878 units by the end of 2014, the TSA now plans to install as many as 1,800 scanners -- or advanced imaging technologies -- at U.S. airports. Rather than using them as an optional, secondary screening measure, the TSA's revised strategy calls for the increasing the use of the devices as a compulsory, primary screening measure "where feasible," the report said.

The TSA's revised plans stem from the failed Christmas Day bombing attempt of Northwest Flight 25. The new plans will cost the TSA an additional $2.4 billion in staffing costs alone, the GAO said.The report called on the TSA to do a complete cost-benefit analysis of the technology to determine an optimal deployment strategy going forward.

"While GAO recognizes that TSA is attempting to address a vulnerability exposed by the December 2009 attempted attack, a cost-benefit analysis is important as it would help inform TSA's judgment," the report said.

The TSA did not immediately respond to a request for comment.

Whole body scanners are designed to detect nonmetallic weapons and explosives concealed under a passenger's clothing, such as the explosive PETN powder that the would-be Christmas Day bomber, 23-year-old Nigerian Umar Abdul Mutallab, concealed in his underwear. The technology is being rolled out at 30 major U.S. airports, most recently at Boston's Logan International and Chicago's O'Hare.

Supporters of the scanners say the technology is vital to bolstering security at U.S. airports. Despite complaints by travelers subjected to whole body scans, the technology appears to be supported by a majority of Americans. A USA Today Gallup poll taken in the aftermath of the failed bombing attempt indicated considerable support, with 78% of the respondents favoring the use of whole body scanners if it improved airline security.

Privacy groups and others opposed to the technology , meanwhile, claim that use of the scanners amounts to a strip search of air travelers. Security analysts and even the GAO itself have called for a thorough review of the effectiveness of the technology in day-to-day airport security operations.

Last week's GAO report ( download pdf ) is the agency's third in the last six months to touch on whole body scanners. Like the previous reports , this one too raised questions about the effectiveness of the technology and whether a body scanner would have been able to thwart the Christmas Day attempted bomber. The report also said the GAO is reviewing the results of operational tests of the scanners conducted by the TSA to get a better understanding of the technology's effectiveness.

The GAO noted that the TSA has conducted an estimate of the life-cycle costs associated with the use of whole body scanners, but has so far not conducted a cost-benefit analysis of using the technology compared to other means, such as pat downs, metal detectors or other practices. The TSA's revised plans to deploy 1,800 scanners represents a two-fold increase from previous plans, the report said. For fiscal 2011, the TSA has requested 3,550 additional full-time employees to operate the machines at a cost of nearly $220 million. From 2012 to 2104, the agency will likely need additional staff to operate the devices, each of which costs $170,000 and requires three full-time staff to operate.

Jaikumar Vijayan covers data security and privacy issues, financial services security and e-voting for Computerworld . Follow Jaikumar on Twitter at @jaivijayan or subscribe to Jaikumar's RSS feed . His e-mail address is jvijayan@computerworld.com .

Read more about security in Computerworld's Security Knowledge Center.

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