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Users with a camera phone equipped with the correct reader application can scan the image of the QR code to display text, contact information, connect to a wireless network, or open a web page in the phone's browser.
You can use it to scan documents, QR codes and more, allowing you to save IRL files in a pinch, pull up menus at restaurants and even check grocery prices on the fly. Here’s how to scan almost...
The app now includes built-in scanning functionality, which you can access either via 3D Touch on the app’s icon, or you can do a search for “QR” in spotlight.
Without modern apps or full keyboards, QR codes were convenient, automatic ways to open URLs, add a contact to your address book, or send a pre-defined message.
But according to some reports on Twitter, QR codes in the U.S. are about to get a second chance, because the first iOS 11 beta has the ability to read QR codes via the native camera app....
Barcode Scanner scanning a QR code. 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 (a built-in camera) to scan barcodes or 2D barcodes and retrieve the data encoded.