MALINTENT is technological system that was developed by the U.S. Department of Homeland Security to be implemented for detection of potential terrorist suspects.

The system does various test scanning for elevated blood pressure, rapid heart

Heart rate

Heart rate is the number of heartbeats per unit of time, typically expressed as beats per minute . Heart rate can vary as the body's need to absorb oxygen and excrete carbon dioxide changes, such as during exercise or sleep....

 and breath rate

Breathing

Breathing is the process that moves air in and out of the lungs. Aerobic organisms require oxygen to release energy via respiration, in the form of the metabolism of energy-rich molecules such as glucose. Breathing is only one process that delivers oxygen to where it is needed in the body and...

, and non-verbal cues

Body language

Body language is a form of non-verbal communication, which consists of body posture, gestures, facial expressions, and eye movements. Humans send and interpret such signals almost entirely subconsciously....

. According to the scientists, the MALINTENT system uses a barrage of non-invasive sensors and imagers to detect and evaluate a person's facial expression

Facial expression

A facial expression one or more motions or positions of the muscles in the skin. These movements convey the emotional state of the individual to observers. Facial expressions are a form of nonverbal communication. They are a primary means of conveying social information among humans, but also occur...

s to gauge whether he or she could be planning to commit an attack or crime.

In its current development, it can recognize seven primary emotions and emotional clues and will eventually have equipment which can analyze full body movement, an eye scanner and a pheromone-reader.

If the sensors pick up anything considered alarming, analysts can decide whether to subject a person to questioning.