If police cars passively scan license plates for stolen vehicles, why don’t they also scan the faces of drivers, passengers, and pedestrians nearby so they can cross-check a wanted criminals database?
by 
Egao No Genki
ANSWERS: 6
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technology and cost ,don't worry coming soon to street corner near you ---Big Brother
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They DO ! However; sometimes the tinted windows make it difficult to scan or see the people in a moving vehicle ... especially at night.
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Because police scanners scan license plates (theres a code or something on license plates that can be picked up by police scanners), but they can't scan human beings
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that's invasion of privacy! we already have enough discrimination/racism problems. everyone is already specious of everyone else---we live in a world of paranoia. even after all these new security measures and all this expensive technology, can we really say that we feel any safer? we have more security forces than ever before, we have more knowledge on up-to-date news, we are informed and trained to spot anything out of the ordinary... ...but does that truly make us feel any safer? creating a system where you "scan" the faces of people, that is truly stripping us of our last strand of dignity. our phone calls are already tapped, we have to be basically strip-searched behind an x-ray machine at airports... is this when we are to be known as the 666?
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Technology has not arrived at that point. scanning license plates is just the beginning of something much bigger on the horizon, for law enforcement. UPC codes, now on most states license plates, give law enforcement the ability to check the plate for stolen and its registration. The other is coming. just one step at a time.
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Because thats too embarasing for a person if he is innocent and also not possible against a vip.
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