
Ink-on-skin tattoo reads ECG and drives a robotic hand
Penn State researchers created a washable, paint-on electronic tattoo using conductive ink that dries on the skin to form an electrode for ECG/EMG/EEG signals. The tattoo connects to a Bluetooth module via a porous silver textile and can control a robotic hand in tests. It can be customized with colors and is designed to stay attached during movement, offering a more comfortable alternative to traditional patches. Future work could include monitoring biomarkers like glucose or cortisol and even plant health, but the technology is not yet ready for consumer use or clinical diagnosis, and it has not been tested on heart-attack patients.










