You can see the robot arm actually printing the 'EEG electronic tattoo' on the scalp from the 46 second mark in the video below. The main component of the ink is the conductive material PEDOT ...

“Our innovations in sensor design, biocompatible ink, and high-speed printing pave the way for future on-body manufacturing of electronic tattoo sensors, with broad applications both within and ...

Additionally, it sticks much better to the skin than other electronic tattoos that were transferred versus printed directly ...

however it generally utilizes ordinary creating materials like a vinyl cutter and temporary tattoo printing paper. You can use any desktop graphics software and afterward bolster that ...