LiSheild is a smart LED bulb that prevents unauthorized photos by confusing cameras ...


LiShield is a new LED light bulb technology that helps protect privacy by confusing cameras to prevent unauthorized photos. The bulb is the creation of a team of researchers at the University of California, San Diego.

LiShield works on any digital camera that uses a rolling shutter and protects a physical scene from photography by flickering its smart LEDs in specialized waveforms to ruin the look of the captured photos with vertical bars across the frame. It can even create colored bars to further “encrypt” the scene as well as convey other information within the patterning.

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