What it is
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.
Uses
They are used commercially in supermarkets for scanning items at the checkout. Other uses include for healthcare and in factories.
Advantages
- 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.
Disadvantages
- 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.
Alternatives
QR code readers could be an alternative.