Could a paint-on electronic tattoo spot heart attacks?

Key Points:

• Penn State engineers have developed a paint-on electronic tattoo using conductive ink that can monitor electrical activity such as ECG, EMG, and EEG signals by drying directly onto the skin as a flexible electrode.
• Unlike traditional rigid or hydrogel electrodes, the paint-on tattoo conforms closely to the skin’s texture, maintaining reliable contact during movement and exercise, and connects via a porous silver textile to a Bluetooth module for wireless data transmission.
• The technology allows for customizable designs with added food dye, potentially reducing the stigma of medical wearables and encouraging longer use, especially among children and teenagers, while remaining washable and reapplicable.
• Early tests demonstrated accurate heart and muscle signal monitoring during daily activities and exercise, as well as control of a robotic prosthetic hand, but clinical validation and testing on patients experiencing heart attacks have not yet been conducted.
• Future developments aim to expand sensor capabilities to monitor biomarkers like glucose or cortisol and explore applications in healthcare and environmental monitoring, though no consumer release date has been announced.