What is a QR Code?
A QR (Quick Response) Code is a special barcode that is read by QR readers and camera phones. To access the information behind a QR code, download a QR reader app onto your smartphone, and then scan the barcode to capture additional data, such as a URL. [as defined by the US State Dept]
Try scanning this QR code for the Dudley Knox Library (DKL) mobile website
Creating QR Codes
If you want to create your own QR Codes for URLs / contact details / SMS (text message) / geolocation these are some recommended free tools:
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