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Sep 10, 2021

A Laser Fired Through a Keyhole Can Expose Everything Inside a Room

Posted by in category: computing

The keyhole imaging technique, developed by researchers at Stanford University’s Computational Imaging Lab, is so named because all that’s needed to see what’s inside a closed room is a tiny hole (such as a keyhole or a peephole) large enough to shine a laser beam through, creating a single dot of light on a wall inside.


If you’re worried about privacy, it might be time to cover up your front door’s peephole.

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