The webcam’s public feed, like thousands of others like it, is accessible to anyone who can find its URL with a Google search. At an art gallery thousands of miles away, a tiny Raspberry Pi computer is streaming the video to a monitor while it analyzes the footage with a simple computer vision algorithm. It instantly snitches, flashing, “WOULD YOU LIKE TO REPORT THE JAYWALKER?” on the screen. If you’re a visitor at this gallery, you’ll face a choice: hit a red button in front of the computer, and it will send a screenshot of the incident in an email to the nearest police precinct, potentially costing her a $42 fine. Or you can let the oblivious lawbreaker go on her way.
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