Here's how the HandShake system works:
A U.S. soldier would take, say, an Iraqi officer and outfit the subject with a special helmet that can pick up both electromagnetic signals (EEG) and perform functional near-infrared imaging (fNIRs) which images blood flow changes in the brain. The soldier would put the subject through a battery of tests including image recognition. Most of the pictures in the tests would be benign, but a few would contain scenes that a potential insider threat would remember, possibly including faces, locations or even bomb parts. The key is to select these images very, very carefully to cut down on the potential false positives .... http://www.defenseone.com
