Washington (CNN) -- Full-body imaging machines that see through clothes have significantly improved security in airports where they are deployed, and have revealed more than 60 "artfully concealed" illegal or prohibited items in the past year, the Transportation Security Administration says.
To date, no explosives have been detected by the machines, but their ability to spot even small concealed objects demonstrates their effectiveness as a security tool, officials said.
"It is absolutely a tremendous improvement of what we can detect at the checkpoints," TSA Acting Administrator Gale Rossides said this week. "It is an excellent piece of technology that will significantly improve our detection capabilities."
As evidence of the machines' capabilities, the security agency released five photos of drugs or suspected drugs that airport screeners found after scans revealed anomalies on the ghost-like images of people's bodies. The agency said metal detectors would not have revealed the items.
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