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You are participating at a group conversation and suddenly you realize that your friends are just lying because they want to be interesting.

Aren't you tired of this type of people? Because I am, and I will tell you about an incredible way of really proving who lies or not.

We all know technology evolves rapidly but I have never imagined that it can provide us so many surprises. For example, I have never imagined that if I own a smartphone I can add an application on it, application that is working as a lie detector. Yes, it's true, from now on, you can test anyone if he or she lies.

I didn't know about this method of discovering if someone lies, but I can tell you that for this, it doesn't exist just one smartphone application; there are several ones.

Next, I will give you some examples of lie detector for smartphone.

One example is Agile Lie Detector. It is an application that is working using the Voice Stress Analysis. The Voice Stress Analysis intercepts the verified person's voice and it detects the level of stress that person has, when trying to give wrong answers or lying. When telling a lie, you don't realize that you are under stress pressure and your voice could betray you, but an efficient detector can show you this. The level of stress is displayed in real time represented by graphs.

This kind of technology was in the beginning developed for military purposes and intelligence use, but now you can use this technology to detect whenever someone is trying to lie you or just having fun by showing others that they are liars.

For example, if you are asking a blonde the following question: "Are you blonde?" and her answer will be "no", then the Agile lie Detector will understand some pressure in her voice and it will display the following:

Another example of lie detector for smartphone is Lie Detector Advanced.

Lie Detector Advanced is an application working also as a lie detector. It uses the same technology based on voice analysis who is analyzing human emotions through their voice. It is usually used by CIA and FBI. This application does a great job when testing people, because many of them may have emotions for the possibility of being caught. The emotions are transmitted through voice and the lie detector will surely tell if he or she lies.

But there might be cases in which the detector will fail to catch you lying. This happens when the person interrogated knows how the lie detector works. Because, once again, the detector doesn't have in its memory answers saved to verify if it is correct or not, but it detects the stress in your voice.

For example, if a person is interrogated and it's lying in a relaxing mode (meaning that the person isn't afraid of being caught and it's not nervous), the lie detector will receive this, as being the truth.

You can check this by trying to interrogate yourself and thinking about some answers and you can see how the detector reacts in both situations.