How to scan a QR code Pocket-lint (Pocket-lint) - QR Codes are small square black and white matrix barcodes that contain certain information, such as a website address, app, password or images. When scanned with your phone, the QR Code will take you directly to a specific webpage, menu, payment screen, app, or offer specific information unique to the code. QR stands for Quick Response with the idea being that when the code is scanned, the information it provides is instant and what you are looking for. QR Codes are everywhere. You might find a QR Code on top of a menu, taking you to a payment page or separate wine menu perhaps, or you might find them on a rental scooter or bike, taking you to the app you need to download in order to rent it for example. If you're wondering about how QR codes work for the UK's NHS COVID-19 track and trace app