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What is a QR code?
A QR code (short for Quick Response code) is an array of black and white squares or pixels set in a grid that stores data for a machine to read. A smartphone or camera can quickly process the information contained in a QR code's specific arrangement of pixels, making it a convenient way to store and access data.
Most QR codes are designed simply to transmit URLs. As such, using a QR code is like typing a web address into your browser, only faster and more convenient. (More on QR codes).
Read a QR code:
To read a QR code, open the camera on your phone and point it at the QR code. You will see a link to the URL pop up on your phone. Click the link to open the website in your phone's default browser.
See step-by-step instructions on how to scan a QR code for your device:
Create a QR code:
You can create a QR Code to share a website with others. Simply right-click on a website using Chrome and select Create QR code for this page.
For more details see Google's device specific instructions: