Programmable pigments: Photochromic nanoparticle inks for rewritable tattoos

2 comments

• delichon 48 minutes ago
  Hear me out, implanted lie detectors with displays tattooed into the foreheads of politicians.
• qwertytyyuu 1 hour ago
  That is so cool. I wonder if this allows for printing images with some kind of 3d printer like thing with a weak uv laser