A touch screen is a display that allows users to interact with a device by touching the screen directly. This technology is commonly found in devices like smartphones, tablets, and computers. Touch screens can detect the presence and location of a touch, enabling users to select options, scroll, and navigate through applications. There are two main types of touch screens: resistive and capacitive. Resistive touch screens respond to pressure, while capacitive touch screens use the electrical properties of the human body. Touch screens have become popular due to their ease of use and intuitive interface, making technology more accessible to a wide range of users.