—brain fingerprint n.
The neurons in a brain fire electrically in synchronised patterns. Once the brain recognises something familiar, it will provide an instantaneous spark of recognition, something called the P300.
—"Fingerprint your brain," New Straits Times, June 11, 2006
The technique, called "brain fingerprinting", has already been tested by the FBI and has now become part of the key evidence to overturn the murder conviction of Jimmy Ray Slaughter who is facing execution in Oklahoma.
Brain fingerprinting, developed by Dr Larry Farwell, chief scientist and founder of Brain Fingerprinting Laboratories, is a method of reading the brain's involuntary electrical activity in response to a subject being shown certain images relating to a crime.
Unlike the polygraph or lie detector to which it is often compared, the accuracy of this technology lies in its ability to pick up the electrical signal, known as a p300 wave, before the suspect has time to affect the output.
"It is highly scientific, brain fingerprinting doesn't have anything to do with the emotions, whether a person is sweating or not; it simply detects scientifically if that information is stored in the brain," says Dr Farwell.
—Becky McCall, "Brain fingerprints under scrutiny," BBC News, February 17, 2004
It's the first time anyone has tried to enter into evidence the results of a computer-generated test created by an Iowa psychiatrist, Lawrence Farwell, who calls the technology "brain fingerprinting." ...
After results of Harrington's test spread through the correctional system, other inmates wanted to be tested. The department now is trying to create a policy on how to allow more brain-fingerprint testing.
—Chris Clayton, "'Brain-Fingerprinting' Defense Gets Iowa Test," Omaha World-Herald, November 14, 2000
Brain fingerprinting is unlikely to replace more conventional biometrics, such as fingerprint or iris recognition, not least because measuring brain waves is such a palaver. Volunteers don a gel-smeared skullcap sprouting electrodes that transmit the pulses to a detector.
—Anjana Ahuja, "Think about it, this will make turning on your computer much simpler," The Times (London), May 22, 2006