Capacitive touch screens are a type of display technology that detects touch through the electrical properties of the human body. When a finger touches the screen, it creates a change in the screen's electric field, allowing the device to register the location of the touch. This technology is commonly used in devices like smartphones and tablets. Unlike resistive touch screens, which rely on pressure, capacitive screens are more responsive and can support multi-touch gestures. They are made of layers of glass and a conductive material, often indium tin oxide, which helps in accurately sensing touch inputs without needing physical pressure.