A Graphene Biosensor Tattoo: A Flexible Stick-on Patch Could Monitor Blood Pressure, Stress, and More

Imagine it's the year 2040, and a 12-year-old kid with diabetes pops a piece of chewing gum into his mouth. A temporary tattoo on his forearm registers the uptick in sugar in his blood stream and sends that information to his phone. Data from this health-monitoring tattoo is also uploaded to the cloud so his mom can keep tabs on him. She has her own temporary tattoos–one for measuring the lactic acid in her sweat as she exercises and another for continuously tracking her blood pressure and heart rate.