|Using the Z Backscatter Van, officials detected drugs hidden in the body of this pickup truck|
As an antiterror measure, the US government has deployed mobile X-ray technology to randomly scan cars and trucks. But the measure is riling privacy proponents.
The mobile X-ray technology works by bouncing narrow X-ray streams off an object like a car and then analyzing the scatter rate of the returning rays. Operators can then locate less-dense objects that could be bodies or bombs.