Such a measure is more accurately described as a gentle tap on the body, but never on the face, making it more of a symbolic measure than a punitive one.

CENTERFORSECURITYPOLICY: Baloney from the Bee

The answer, he said, was to tap into the brain's "hierarchical" system used to control the body.

BBC: The robot that reads your mind to train itself

The new body monitors could, if a driving hazard appeared imminent, trigger the car's safety systems to tap the brakes, turn off a radio, block a cellphone from ringing or take other actions.

WSJ: Designing a Car That Takes Your Pulse, Senses If You're Ill