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Microphones are another input device that has varied uses with computing systems. For example, there are recording microphones for capturing high quality sounds, or they can be simple devices only for listening. They are plug and play, typically require no software, are self-configuring and come as both stand-alone MIDI connector or may require a special adapter if its use is for high-end, high quality recording. Another input device, biometric readers, are becoming more popular as a newer security tool. For example, fingerprint readers are appearing more and more on laptop computers as a means of authentication. Iris scanners which scan your iris or the blood vessels in your eye and voice readers which map specifics identifiers to authenticate a person are also example of biometric input devices.
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