I like your point of emitters. I dont want to get slapped with a ticket for looking at an attractive woman in public. Her: "He looked at me", Me: "She's emitting beautiful light!"
With whom are you disputing, though? Who's suggesting the type of law you mentioned? When people express concerns about surveillance tech, we aren't talking about one pedestrian looking at another pedestrian. It's not hard to imagine a world in which a) there are no mass license plate recording devices, and b) it's perfectly legal to look at another person on the street.
Rather than emitting, she'd be reflecting the light in a beautiful way.
That depends on how hot she is.
similar sentence modification for the license plates then. They are not emitters, just reflectors.