Synaptics Incorporated is a publicly owned San Jose, California-based developer of human interface hardware and software, including touchpads for computer laptops; touch, display driver, and fingerprint biometrics technology for smartphones; and touch, video and far-field voice technology for smart home devices and automotives. Synaptics sells its products to original equipment manufacturers and display manufacturers. Synaptics invented the computer touchpad, the click wheel on the classic iPod, Android phones' touch sensors, touch and display driver integrated chips, and fingerprint sensors. Wikipedia