03-03-2024, 06:44 PM
In 2001, federal law enforcement agencies sent a letter to Senator Chuck Grassley explaining their interest in a technology called “Brain Fingerprinting”. The technique, as they stated “is designed to determine whether an individual recognizes certain details of an event or activity by measuring the individual’s brain wave responses.”
Brain Fingerprinting involves measuring the EEG signals from the brain as the subject is shown a series of words and pictures on a screen. When used in an investigation, among the words and images shown are details of the case that only law enforcement or the perpetrator of a crime would know. Once some information is familiar to the subject, it will trigger an involuntary response from the brain called a “P300” response that is recorded.
Brain Fingerprinting was first used in an active case in 1999 and is credited for assisting in the solving of a 15-year-old murder case. Its creator Lawrence Farwell was covered by both Time Magazine and 60 Minutes.
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