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I'm still waiting for eink tattoos. Imagine how cool it would be to have a watch in your skin

So much hype in the article and in the paper for it being "programmable" when it's just... UV reactive? Like, cool but calm down

> In outdoor daylight conditions, including shade, the UV content of incident sunlight is sufficient to activate PhotoTat to a photostationary state

Tattoos you can turn on and off