People lie on many occasions. They are available in every sphere of life. Sometimes they lie knowingly and sometimes intentionally and on few occasions according to circumstances. Many people lie with confidence without batting the eyelid, some use sunglasses to evade eye contact. When a person tells a lie, the eyes betray and show the emotion. However, it is not expected from a consistent liar or a hardened criminal.
Blushing is another sign of lying. This is a natural symptom for common people. This is observed by experienced people. Today, modern science has developed various gadgets to detect lie. The high-resolution thermal camera is one of them. This camera is very powerful and picks the rush of blood to the face precisely. This thermal camera is used to detect liars, criminals and terrorists. Therefore the camera is used in susceptible places like airport Metro, busy streets and other public places.
The other means to detect a lie is to observe the body language and its movement. Avoiding looking into your eyes, behaving nervously or feeling uncomfortable while altering postures, are some of the behavioral symptoms. Slip of tongue and incoherent statement identify a liar. He may try to evade some specific incident even after repeated questions and be on the extreme guilty attitude. It proves that that he is camouflaging facts. This method is the easy way to tell when someone is lying.
It is difficult to predict lie from nonverbal behaviour. Detecting pretense is hard task. Inconsistency in statements is a lie. The statements are then imposed on the people in a tricky way and convincingly. However, detecting lies is a highly skilled job and needs lots of experience.
People frequently say that they do not mislead others, but on the other hand, they keep back crucial information. This is another form of lying, which is difficult to detect in real life. When they are detected telling lies, they become extremely defensive and try to switch the subject abruptly. It is not easy to ascertain a lie from the behavior but your gut feeling alerts you and make you feel that it is a lie.