This really works! I've tested it on my family, and so far it has been accurate. DO NOT START TALKING BEFORE THE SPEECH BUBBLE DISAPPEARS! ALSO DON'T BLINK IT'LL MESS IT UP! How this works: Everyone has a glitch when you lie. A twitch of a muscle, hint of a smile, it's a fact of life. So, everything inside the rectangles is being measured for differences from lie to truth. I designed it to track the motion of your eye and mouth area. Usually lying takes more motion. Also, everyone has a movement that happens when your lying. The motion inside the boxes tracks the differences between when you're lying, and when you're telling the truth. Then, it averages the data into two numbers. One for lying and the other for the truth. So, when you say either a lie or truth, which ever the average of that is closer to, it says! :D
Reshared because of improved features. @floatingmagictree for the average script. Me Scratch The human brain. I'm sorry if it doesn't work on you....it's not perfect :( Though, I did a little experiment and it worked 66% of the time on me (4/6 times), but I know how it works, so I might've tricked it :|