Security firms working on devices to spot would-be terrorists in crowd
The plans describe how systems based on video cameras, laserlight, infra-red, audio recordings and eye tracking technology are expected to scour crowds looking for unusual behaviour...Ok, this is getting a little spooky.
...lie detector-type test that can be used remotely - an advantage because it would not interfere with the flow of a crowd and it could be used without the target's knowledge.
