From the blog Compass: You've seen them on the backs of magazines or in the doorways of restaurants – the weird black-and-white, mosaic-looking barcodes ...
travel.yahoo.com/.../black-boxes-rio-installs-qr-codes-sidewal...
via Google Alerts - qr code
travel.yahoo.com/.../black-boxes-rio-installs-qr-codes-sidewal...
via Google Alerts - qr code
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