The technology that enables the use of gestures for control in user interfaces is called gesture recognition. This technology interprets human gestures via mathematical algorithms and camera systems, allowing users to interact with devices and applications without traditional input methods like keyboards or mice. It can utilize various sensors, including cameras and motion detectors, to translate movements into commands. Gesture recognition enhances user experience by offering a more intuitive way to control devices, especially in environments like gaming, virtual reality, and hands-free applications.