VICTOR TANGERMANN, FUTURISM – 21 DECEMBER 2019 For the people overseeing nationwide vaccination initiatives in developing countries, keeping track of who had which vaccination and when can be a tough task. But researchers from MIT might have a solution: they’ve created an ink that can be safely embedded in the skin alongside the vaccine itself, and it’s only visible using a special smartphone camera app … Continue reading An Invisible Quantum Dot ‘Tattoo’ Could Be Used to ID Vaccinated Kids