Capacitive touch technology detects touch through the electrical properties of the human body. When a finger approaches or touches a screen, it creates a change in the electric field, which is sensed by the device. This technology is commonly used in smartphones, tablets, and other touch-sensitive devices. Unlike resistive touch screens, which require pressure to register a touch, capacitive touch screens respond to the electrical charge of the finger. This allows for more precise and responsive interactions, making it a popular choice for modern devices like Apple iPhones and Samsung Galaxy smartphones.