A female black inventor far ahead of her time, Marie Van Brittan Brown created an invention that was the first in a long string of home-security inventions that continue to flood the market today.
Brown's system had a set of four peep holes and a camera that could slide up and down to look out each one. Anything the camera picked up would appear on a monitor. An additional feature of Brown's invention was that a person also could unlock a door with a remote control.
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