Gallery: Jewelry That's Made Only of Light Beamed Onto Your Skin

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    01

    soairo2

    Neclumi is an app that pairs with a picoprojector, which attaches to a shirt collar, to shine little light tattoos on the wearer’s neck.
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    somovi2

    Neclumi has four styles, each of which responds to different sensors in smartphones. This one, Movi, bounces up and down in time with an accelerometer.
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    sono1

    Sonos, here, flickers and reacts to ambient noise collected through a microphone.
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    soroto2

    Roto flips and rotates around in tandem with the phone's compass.
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