Brain fingerprinting allows investigators to identify or exonerate subjects through measurement of brain-wave responses to crime-related pictures or words presented on a computer screen. The technique is based on the principle that the brain is central to all human activities; it plans, executes, and records information. If a subject has information pertaining to a crime, that information is permanently recorded in the brain and, with proper training and technology, can be retrieved. The article describes some of the benefits of brain fingerprinting (e.g.,quick and cost effective identification of criminals) as well as concerns about the technique (suggestibility of subjects, false memories, effects of drugs and alcohol). Legal issues regarding the technique include admissibility in court and the manner in which the test is administered.