Not only did Parisian tattooist Karl Marc dream up the notion of an interactive tattoo using a QR code, he even found a willing human guinea pig to try the idea out on. The tattooed QR code links to a ...
SPOTTED: Marketers are divided on the merits of QR codes. If you are a follower of fashion you'll know those strange looking black squares with Escher-like patterns can take a smartphone user to a ...
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