Pedln, have you seen the news items about the new Google Glasses? Wear those and a bob of the head will get you info on what you happen to be looking at at the time. Facial recognition is involved. So the idea is that you are walking down the street (hopefully not driving), bob you head, for example, at a store front and get info about the store. I read the other day that it also uses facial recognition. So does that mean that if I am wearing one of these gadgets, and I see someone interesting or suspicious, I can get that person's vital statistics. Great! What I really want is a bunch of strangers bobbing their heads at me and finding out my name, address, age, etc.
Oh, wow! Another chance to look out my window as I cruise the net and see the crescent moon with Venus and Jupiter in close proximity. Beautiful.