What characteristic best describes a barcode scanner?

What characteristic best describes a barcode scanner?

  • an input device that reads barcodes affixed to most retail products
  • an input device that provides verification of package delivery by digitizing a written name
  • a head-mounted device that superimposes images and audio over a real world image and can provide users immediate access to information about their real surroundings
  • an output device used to present information from a laptop onto a screen

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