In reality, they are already being field tested by the DHS and perhaps other federal agencies as well under the banner of “threat assessment” and “malicious intent detection.”
While it might be beneficial in some ways, I think that the risks are much greater than the rewards, since the DHS seems to want to use this as a kind of pre-crime technology.
They seek to create a world where if a computer says you’re lying, you become instantly criminalized, even if you are just darting your eyes around or your skin temperature is raised because you are nervous. ...
This could result in wholly innocent people being treated as potential criminals just because they’re uncomfortable being questioned by police, ...
Is Big Brother closer than people think?