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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.
A barcode reader or barcode scanner is an optical scanner that can read printed barcodes and send the data they contain to computer. Like a flatbed scanner , it consists of a light source, a lens, and a light sensor for translating optical impulses into electrical signals.
Most modern smartphones are able to decode barcode using their built-in camera. Google's mobile Android operating system can use their own Google Lens application to scan QR codes, or third-party apps like Barcode Scanner to read both one-dimensional barcodes and QR codes.
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.
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...