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San Francisco has the first city in the USA to facial recognition software. The city has said police and other public departments cannot the software. San Francisco already uses surveillance cameras for reading car number plates and police officers body cameras. There is facial recognition at airports. Many officials wanted to facial recognition in the city to security. They said facial recognition technology would it cheaper and faster for police to crime suspects and missing people. An expert on information technology said: "A ban on facial recognition will make [San Francisco] in time with outdated technology."

There many opponents of the technology, which is widely used in other parts of the world. San Francisco official Aaron Peskin facial recognition a "Big Brother" technology. Big Brother is a character in the book "Nineteen Eighty-Four" by George Orwell. The phrase Big Brother is now to attempts by governments or authorities to surveillance and "" on citizens. Mr Peskin said: "We can have security without a security state. We can have good policing without being a police state." He added that: "Part of that is trust with the community on good community information, not on Big Brother technology."

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