Brain Fingerprinting could be the new Lie Detector Test
A convicted murderer facing a death sentence in America hopes that a new forensic science technique called “brain fingerprinting” which tracks human memories will rescue him from the executioner.

Jimmy Ray Slaughter was convicted in Oklahoma of the 1991 murders of his former girlfriend and their baby daughter and sentenced to die by lethal injection. He always said he was innocent but his appeals against the death sentence were running out when his lawyer heard about the technique. The tests showed that Slaughter did not commit the murders and an appeals court is expected to make a decision soon whether to free him.

Brain fingerprinting is supposed to assess the truthfulness of what a suspected criminal is saying by monitoring electrical “flashes” in the part of the brain associated with memory. The suspect is shown words, images or objects of the crime scene or a weapon that only the police or the person who committed the crime would know about.

An involuntary electrical signal in the brain – known as a P300 wave – registers recognition. It happens so fast, within 300 milliseconds, that it is deemed impossible to fake a response.

The technique has already been accepted as valid by courts in some US states and is being considered for use by the FBI and CIA, which have been impressed by tests.
(Thanks for the info Laggies!)