Tattoos you can turn on and off

2 comments

• tomhow 1 day ago
  Comments moved to https://news.ycombinator.com/item?id=50041252.
• xgulfie 1 day ago
  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

  https://www.cell.com/matter-light/fulltext/S3117-5848(26)001...