Scanner images showing a subject with no explosives (left) versus more than 200 grams of simulated plastic explosives molded around his torso, with the detonator hidden in his belly button.
In the explosive example, as with the other hidden weapons, the researchers admit they had to experiment with different setups several times before finding one that left no trace in the scanner’s images. But they won’t share all the concealment tricks they learned. “We’re not trying to to provide recipes to attack actual devices in the field,” says UCSD researcher Keaton Mowery.
In addition to their physical attacks, the researchers also