NYPD Testing New Surveillance Robot to Patrol Busy Subway Station Overnight
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A police robot called K-5 will patrol New York's busiest subway station overnight in a new pilot program.
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The 420-pound robot will patrol for 2 months from midnight - 5am before officials decide if it can operate alone.
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An NYPD officer will accompany the robot at all times during the trial period.
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The robot can record video but not audio, and does not use facial recognition.
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Civil liberties groups have concerns about potential privacy issues with the new surveillance robot.