Electroencephalography (EEG), developed by Lawrence Farwell, led to the discovery of brain fingerprinting. A unique computer-based method called "Brain Fingerprinting" uses brain-wave responses to phrases or images associated with crimes that are displayed on a computer screen to precisely and scientifically identify the person who committed the crime. By identifying brain wave reactions to words, phrases, or images shown on a display unit, it aims to reveal information that may be hidden in a person's brain. A wave-like reaction known as a memory and encoding-related multidimensional electroencephalographic response (MERMER) occurs when the brain detects content it is familiar with. The brain's P300 reflexes are present in it. It takes roughly 10 minutes to finish the test.