QR codes are those square barcode ... to scan a QR code on an Android phone As QR codes have become more common, more manufacturers have built QR scanners directly into the default camera app.

However, with a barcode or "quick response" scanner app, you can also install apps with QR codes that appear on websites, in magazines or on advertisements. Using the QR code to install ...

Wedge barcode scanners and serial barcode scanners both connect to a PC to scan barcodes into the system. They do not, however, work the same way and each has advantages and disadvantages.