Advanced Input Devices (AID) is a technology company that designs and manufactures specialized input devices, such as trackballs and touchpads, for a variety of applications. AID was founded in 1987 and is headquartered in Mill Valley, California. The company’s trackballs and touchpads are used in a wide range of industries, including gaming, healthcare, military, and industrial control. AID’s products are designed to be reliable and easy to use, and the company offers a range of customization options to meet the specific needs of its customers. In addition to trackballs and touchpads, AID also offers a range of other input devices, such as touch screens and joystick controllers.