A capacitive touch switch is a type of electronic switch that detects touch through the electrical properties of the human body. Unlike traditional mechanical switches, which require physical pressure, capacitive switches sense changes in capacitance when a finger approaches or touches the surface. This allows for a more seamless and durable design, as there are no moving parts to wear out. These switches are commonly used in various devices, including smartphones, tablets, and home appliances. They can be integrated into touchscreens or used as standalone buttons, providing a modern and user-friendly interface for controlling electronic devices.