I’m envisioning a glass encased micro-LED and battery chargeable by a local non-wired device. I imagine you could put rows/matrices of lights under the skin and control them (on/off, color, timing) by app and have all sorts of glow-in-the-dark fun. Light-up tats! Forehead advertisements! Turn signals for your ears! Runway lights! And for the ultra-tacky, remember those tee-shirts with the blinky EQs?
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