New Police Technology Raises Privacy Concerns

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Starting this fall, law-enforcement agencies across the country will be outfitted with new devices that will make iPhones capable of scanning a person's face and matching it to a database of people with criminal records. The new facial-recognition technology, which is also able to collect fingerprints, has raised concerns with privacy advocates who say police who use the device may be conducting "searches" illegally without warrants. Julia Angwin wrote about the new devices in today's edition of The Wall Street Journal.