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A Human Interface Device (HID) is one that communicates with the host computer using structured reports. The HID class of devices consists primarily of devices that end users use to interact with computers. The class includes keyboards, mice, and game controllers of all kinds, but it can include any imaginable knob, switch, button, slider, exoskeletal device, or other type of control that a user might use to control a computer. Noninteractive devices such as bar code readers and measuring instruments might also be designed to fit into the HID class. In addition, HID devices can incorporate user-information components such as lights, displays, force feedback, and other indicators.
