How Does Polygraph Serve As an Investigative Tool?
‘Smart’ offenders commit crimes in such a manner as to cover their tracks and make it difficult to identify the culprit or to prove guilt. Sophisticated crooks know how the authorities operate and they resort to countermeasures. In the workplace, the culprit could be one of many staff working in an office but there are no leads. Such a scenario is typical of many crimes committed. Routine police investigations in such cases may end in a ‘dead end’ and the employer winds up having to live with the uncaught offender. Investigators find themselves in situations where there is a complete lack of information/evidence, information gaps or only circumstantial evidence. Often, it is a case of one man’s words against another. At other times, different people give grossly different versions of the same event or a person gives an account that cannot be independently verified. In such situations, polygraph examination is the most effective means to determine the credibility of a person’s statement
