Brain fingerprinting is a technique that uses electroencephalography (EEG) to measure brain wave responses when a subject is exposed to crime-relevant stimuli. It aims to identify perpetrators based on the premise that details of crimes they committed will be stored in their brain, triggering a P300 brain signal. The technique has been shown to be 100% accurate in tests. It can help identify criminals, terrorists, and members of criminal groups by accessing crime evidence stored in their brain. However, it only detects what information is stored, not how it got there or if the subject is lying.

1. BY
K.PULLARAO

2. OVERVIEW
 INTRODUCTION
 WHY BRAIN FINGER PRINTING??
 HOW TO DIFFERENTIATE
 Operating Mechanism
 Advantages
 Disadvantages

3. INTRODUCTION
 Brain Fingerprinting is a new computer-based
technology to identify the perpetrator of a crime
accurately and scientifically by measuring brain-wave
responses to crime-relevant words or pictures
presented on a computer screen.
 brain Fingerprinting has proven 100% accurate in over
120 tests, including tests on FBI agents, tests for a US
intelligence agency and for the US Navy, and tests on
real-life situations including felony crimes.

4. WHY BRAINFINGERPRINTING??
 Brain Fingerprinting is based on the principle that the
brain is central to all human acts. In a criminal act, there
may or may not be many kinds of peripheral evidence, but
the brain is always there, planning, executing, and
recording the crime.
 The fundamental difference between a perpetrator and a
falsely accused, innocent person is that the perpetrator,
having committed the crime, has the details of the crime
stored in his brain, and the innocent suspect does not. This
is what Brain Fingerprinting detects scientifically.
 The secrets of Brain Fingerprinting Matching evidence at
the crime scene with evidence in the brain . When a crime
is committed, a record is stored in the brain of the
perpetrator.

6. •Electroencephalography (EEG) is the measurement of
electrical activity produced by the brain as recorded from
electrodes placed on the scalp. Just as the activity in a
computer can be understood on multiple levels, from the
activity of individual transistors to the function of
applications, so can the electrical activity of the brain be
described on relatively small to relatively large scales.
ELECTROENCEPHALOGRAPHY
•Scalp EEG is collected from tens to hundreds of
electrodes positioned on different locations at the surface
of the head. EEG signals (in the range of milli-volts) are
amplified and digitalized for later processing. The data
measured by the scalp EEG are used for clinical and
research purposes.

7. During investigation

8. Types of Stimuli Used
 Probes
 Life-experience related
 Relevant to the investigated event -recognizable and
noteworthy only for the subjects who had participated in the
event (MERMER)
 Targets
 Push a button to indicate known image
 Since the relatively rare Targets are singled out in the task
being performed, the Targets are noteworthy for the subject,
and each Target stimulus elicits a MERMER

9. Before stimuli After stimuli

12. BRAIN WAVE (P300)
The technique uses the well known fact that an electrical
signal known as P300 is emitted from an individual's brain
approximately 300 ms after it is confronted with a stimulus
of special significance,

15. Counter Terrorism
Brain fingerprinting can help address the following
critical elements in the fight against terrorism:
1) Aid in determining who has participated in terrorist
acts, directly or indirectly
2) Helps in identifying trained terrorists with potential to
commit future terrorist acts even if they are in a “sleeper”
cell and have not been active for 3 years.

16. •The record stored in the brain of the perpetrator is
often a rich source of information that can be
connected to the crime scene.
• Identify criminals quickly and scientifically
•Record of 100% accuracy.
• Identify terrorists and members of gangs, criminal
and intelligence organizations.

17. Continued..
 Reduce expenditure of money and other resources .
 Human Rights Oriented.
 Access criminal evidence in the brain.

18. DISADVANTAGES
 Brain fingerprinting detects information and
processing brain responses that reveal only what
information is stored in the brain. It does not detect
how the information got there.
 It does not detect lies. It simply detects information.
No questions are asked or answered during a brain
fingerprinting test.