How to Detect Lies in Humans With Lie Detectors?

Answer The polygraph machine has for decades enabled law enforcement professionals to detect whether or not a person is telling the truth. These machines have limitations and are certainly not 100-percent... Read More »

Top Q&A For: How to Detect Lies in Humans With Lie Detectors

How to Detect Lies with Eye Movements?

Lots of people claim to know when they are being lied to. While there are techniques for identifying whether an individual is lying or not, they aren't entirely reliable. Even lie-detector tests ha... Read More »

How to Detect Lies?

Watching facial expressions in order to determine whether a person is lying might just save you from being a victim of fraud, or it could help you figure out when somebody's being genuine. Jury ana... Read More »

Could you use an infrared camera to detect lies?

Yes. Infrared light can be used to detect levels of activity in the brain. Monitoring the areas that pertain to lying (creative thought, short- and long-term memory, etc.) with an infrared device c... Read More »

Do smoke detectors detect carbon monoxide?

A smoke detector can detect carbon monoxide (CO) only if it is a dual-purpose smoke-and-CO detector. A single-purpose smoke detector only detects particles produced by flaming or smoldering fires, ... Read More »