Essentially, a barcode scanner is a device that reads the code on a product ... There are two main types of barcodes: 1D barcodes – the series of black and white lines in a box with a code of numbers ...

The grocery checkout barcode scanner hasn’t changed much over the ... When one line isn’t enough, 2D symbologies are used which include PDF-417, Aztec code, Maxicode, Datamatrix, and QR ...