The document discusses electronic skin, a new ultra-thin electronic device that can attach to the skin like a temporary tattoo. It can measure vital signs like electrical heart activity and brain waves. Researchers developed it to reduce wires and make medical monitoring more compact. Electronic skin uses tiny sensors and a "spider web" circuitry design made of silicon filaments. It transmits the recorded body signals to a receiver. Researchers believe it could one day control virtual screens to monitor health and even stimulate skin for smart bandages.