Want to know if that CD you're about to buy is cheaper online? Point your iPhone at the bar code and in seconds this app will look up competing prices. Rick Broida is the author of numerous books and ...

As smartphones have become more and more ubiquitous, so have QR codes. These maze-looking squares are a type of matrix bar code that contains data — usually, QR codes point to a website or open a ...

You can scan a barcode with your iPhone by using a third-party app. Currently, there are no built-in apps that can read barcodes. Your iPhone can automatically scan QR codes using the built-in camera ...

If your Android device is not scanning a QR code, make sure the code is properly framed on your screen. Cleaning your camera lens and getting better lighting on the code are other potential solutions.