Startup Idea : Lie Detection in conversation

I wonder how many people are interested in you cheat or not, in conversation. The idea of a smartphone app, which by the tone of voice and by the video conversation and facial expressions defines lying to you or not when dealing with you. There are basic criteria on which with the big share of probability it is possible to identify a lie. It is clear that if we are talking about the intonation of the voice, then the user must first pose simple questions that make no sense to lie to the opponent, then turns on the verification mode and asks already important questions that he wants to get a truthful answer, and the application analyzing the changes in intonation based on the recorded neutral speech earlier, notifies»…