Ignoring the fact that this doesn't work, can you imagine if you could accurately detect someone is lying with devices that everyone carries with them?

Just imagine the power that such a technology a totalitarian government could wield using this.

Jethro's phone beeped incessantly to remind him that he had not completed his patriot assessment in the last 24 hours. He groaned internally, and even though he was running late for work he decided that he had better take the 5 minutes to complete the test. He couldn't afford to lose any more social credit points this month.

Opening the app, he could see his face in the top corner of the screen to help him know the camera was centered on his face, not that he really needed this after doing the assessment almost daily since his 10th birthday.

The first question flashed onto the screen, "Have you committed any crimes in the last 24 hours"