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Facial recognition can also be deployed in real-time video surveillance, scanning frames captured at places where crowds of people accumulate—such as entrances and exits of football stadiums and concert venues, airplane debarkation points, and commuter train crowds during busy “rush hour” periods. The software freezes the frames and maps the faces contained on them, seeking matches on

Facial recognition software uses algorithms to mathematically map certain facial features. These can be compared to other photos to find an exact match in a database of images.

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Contemporary Issues: Drones and Surveillance