Your smartphone has the ability to read both QR codes (which automatically take you to a website URL) as well as scaning a barcode to bring up product information such as price comparisons and user reviews. All you need to do is download the right app and then simply point your smartphone camera at the codes. Here's where we show you how to scan QR and barcodes with your smartphone.
The application Barcode Scanner is an Android app, from the open-source project ZXing (short for Zebra Crossing), that allows an Android device with imaging hardware (camera) to scan barcodes or 2-D "graphical barcodes" and retrieve the data encoded. Information encoded often includes web addresses, geographical coordinates, and small pieces of text, in addition to commercial product codes. The Android-based system is given similar functionality to a hardware barcode reader.
This application supports many different types of barcode, including those used to identify products in commerce. The Barcode Scanner can automatically search the Web to identify a product with a barcode and use, for example, price-comparison information.