Tattoos you can turn on and off
By MortyDev · 2026-10-11 · 39 points · 11 comments
https://www.livescience.com/technology/cool-chemistry-trick-allows-new-tattoos-to-turn-on-and-off
By MortyDev · 39 points · 11 comments · on Hacker News, read on BetterNews.
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