What is a QR code?
QR codes are two-dimensional representations of text. They can be read by QR code readers, which can be downloaded to mobile devices with camera and web capabilities.
Once scanned, QR codes can link the user to a web address, text, phone number, email address, or geolocation.
To get a QR code reader on your mobile device, you will need to download an application. A list of barcode-scanning applications compiled by Mobile-Barcodes can be found at http://www.mobile-barcodes.com/qr-code-software/ .