introduction :
introduction Why are the polygraphs introduced?
What are polygraphs?
What is the lie behind the lie detector?
lie detector :
lie detector It is an instrument which is a combination of medical devices that are used to monitor changes occuring in the body
TYPES OF POLYGRAPHS :
TYPES OF POLYGRAPHS Analog polygraphs
Digital polygraphs
ANALOG POLYGRAPHS :
ANALOG POLYGRAPHS
DIGITAL POLYGRAPHS :
DIGITAL POLYGRAPHS
CIRCUIT DIAGRAM :
CIRCUIT DIAGRAM
POLYGRAPH EXAMINERS :
POLYGRAPH EXAMINERS During a polygraph exam there are only two people in the room. One is the person conducting the exam and the other is the subject.
LIE DETECTOR TEST :
LIE DETECTOR TEST Pretest
Design questions
Intest
Post test
Counter Measures :
Counter Measures Sedatives
Antiperspirant on fingertips
Tacks placed in the shoe
Biting tongue, lip or cheek
CONCLUSION :
CONCLUSION There is the possibility of two types of errors to occur falsepositive and falsenegative. So this should not be the only basis to punish a person on his crime.
THANK YOU :
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