Lie detectors are also known as polygraphs. These polygraphs are tools that seek out the truth from a person. It is used to tell whether a person is telling the truth or not, simply by checking out his vital signs, such as one’s heartbeat, eye movement, blood pressure, and even sometimes, the amount of sweat that comes out from one’s body. Here are the things which make poligrafo very useful in seeking out the truth.
Polygraphs are very useful in knowing the truth from someone because most of the time, the output and conclusion that these machines present are true, accurate, and precise. It is in its level of precision which makes it the tool or machine of choice of most crime investigators or any other person that wants to seek out the truth from someone in order to solve a certain issue.
Based on Your Body Reactions
These polygraphs are also very useful because it is not just a guessing device. It analyzes and checks out the vital signs that are shown by your body, such as your heart beat, eye movement, sweat, blood pressure, and a host of other stuffs. It is in knowing these that it then relates it if you are telling the truth or not.
Using these polygraphs are very good and reliable because these are systematic. Instead of just relying on the witnesses that can attest to someone’s conviction or innocence, most crime investigators use polygraphs instead. This is because if you are just to listen to what a person says, chances are, is that they might just be lying. It’s better to use a device or a tool that follows a systematic process, to make sure the truth is said in solving a specific issue.