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Barcode Readers

What it isbarcode

A barcode reader or barcode scanner is an electronic device that reads printed barcodes to a computer, by translating optical impulses into electrical ones. It consists of a light source, a lens and a light sensor.


They are used commercially in supermarkets for scanning items at the checkout. Other uses include for healthcare and in factories.


  • Reduces the chance of human error as all the employee has to do is scan an object’s barcode to get the information they need.
  • They help keep track of inventory.
  • They save time as simply scanning items is quicker than typing the information by hand.


  • They can break down, just like computers which would leave you without for doing inventory checks.
  • They cost money – from £50 up to a few hundred pounds, but you get what you pay for.


QR code readers could be an alternative.