How do lie detectors actually work? Well, they aren't as simple as "lie" and "truth" on a machine.
Lie detectors, professionally known as polygraph tests, are machines that monitor your physiological responses to certain questions. From there, the polygrapher determines what your responses are indicating about the truth.
Lie detectors aren't 100% accurate, so they are not admissible in court as evidence. However, if you have a good lawyer, they can work with a prosecutor and prove that you are innocent to avoid going to trial.
