Researchers at Penn State have developed a paint-on electronic tattoo that can monitor heart, brain, and muscle activity without the bulky sensors or sticky adhesives used in traditional wearables. Applied directly to the skin like body paint, the flexible device conforms to your body for more accurate readings and washes off when you're done. The technology is still in the research stage, but it offers a glimpse at what the next generation of wearable health tech could look like. #WearableTech #SmartTattoo #HealthTech #MedicalTechnology #Innovation #TechNews #DigitalTrends