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 ...

Two-dimensional matrix codes that contain information that can be quickly scanned by a computer are being put to new uses seemingly every day.

Barcode (Free): This app scans Data Matrix and QR code and the main drawback with this one is that you will have to select the code type every time as it lacks the auto detecting feature.