Our NanoNews Digest Sponsors Home > Press > Light-emitting tattoo engineered for the first time: Scientists at UCL and the IIT -Istituto Italiano di Tecnologia (Italian Institute of Technology) have created a temporary tattoo with light-emitting technology used in TV and smartphone screens, paving the way for a new type of OLED tattoo. CREDIT Barsotti - Italian Institute of Technology. Abstract: Scientists at UCL and the IIT -Istituto Italiano di Tecnologia (Italian Institute of Technology) have created a temporary tattoo with light-emitting technology used in TV and smartphone screens, paving the way for a new type of "smart tattoo" with a range of potential uses.