[nudephil (OP)]

Paul asked us:

With facial recognition, could airport security - or any security - study people's faces and determine if some person had nefarious intentions? It would need to be done in conjunction with observing the individuals overall demeanour. If a terrorist were a good poker player could he control his eyes, etc?

Any weight to this?

[chris]

I would say yes, and people are already doing this. For instance, there are subtle changes to blood flow around the eyes when people tell lies. The same is true when people become emotional, such as angry. Cameras can see this as a change in infrared (secondary to hot blood flowing closer to the skin surface).

[GabrielLuke]

Yes we can use it for several purposes. Facial recognition is one of the most expensive biometric technologies of this age. Why? Because it is easy to use, integrate and filter everyday. Face verification and document verification has proved to be a workable solution to detect all forms of identity fraud. The process taken in the face recognition solution does not allow criminals to escape.

[Bored chemist]

Could you use facial recognition to tell someone's intentions?
We can barely use it to recognise faces
https://www.bbc.co.uk/news/technology-50865437

[nostradmachi]

Theoretically, it's possible. But current facial recognition technology is simply not advanced enough to, I think, to perform that kind of analysis with a good degree of accuracy. In time perhaps, but probably not in this decade.

[Petrochemicals]

I would say yes, and people are already doing this. For instance, there are subtle changes to blood flow around the eyes when people tell lies. The same is true when people become emotional, such as angry. Cameras can see this as a change in infrared (secondary to hot blood flowing closer to the skin surface).

This is people who feel guilt or wrong doing chris, the feeling of empathy with the moral code. If a pathalogical liar, psycopath, sociopath or psycologically resolute person undergoes lie detector testing the results are not in anyway indicative.

https://liedetectors-uk.com/can-a-psychopath-or-a-pathological-liar-pass-a-polygraph-test/

https://pdfs.semanticscholar.org/d1f6/76ad6de40bcea4adef404d1e7ac1bda58a35.pdf

Anyone who is going to blow themselves into a red mist is in no way maving empathy with the people they hope to take with them.

[RD]

Anyone who is going to blow themselves into a red mist is in no way maving empathy with the people they hope to take with them.

Their face could be unusually pale/cold as a consequence of being adrenalised.

[Bored chemist]

If a pathalogical liar, psycopath, sociopath or psycologically resolute person undergoes lie detector testing the results are not in anyway indicative.

The same is true for other people.
Lie detectors are rubbish.

"commonly used by law enforcement in the United States, but rarely in other countries because it is based on pseudoscience."
from
https://en.wikipedia.org/wiki/Lie_detection

[Petrochemicals]

Anyone who is going to blow themselves into a red mist is in no way maving empathy with the people they hope to take with them.

Their face could be unusually pale/cold as a consequence of being adrenalised.

How many people in general society would have an "abnormal face" in your local town, let alone those about to fly. You can barely get on a plane as is, incorporate this technology and planes would never get to take off.