In practice, Farwell says, "Brain Fingerprinting" is a kind of memory detector — one that he claims can uncover truth and deception with startlingly high accuracy and reliability. >"Larry Farwell Claims His Lie Detector System Can Read Your Mind. Is He a Scam Artist, or a Genius?. 30 years after it was first pioneered, the Brain Fingerprinting system is finally being put to the test."