Sense of Honesty

If I could create a 7th sense for people to encompass, it would be a sense of honesty. I think it would be really awesome for a reaction to occur within or on the human body that would signal the presence of a mis-truth. Possibly the fingers or toes would turn red or get hot when you or someone else is lying to you. If we could all sense when something was false, our lives would function around what is true.