Coinbase's ad for its cryptocurrency exchange site featured one long shot of a QR code (a type of barcode that can be scanned by smartphones) floating around the screen like a classic screensaver. But ...
For the uninitiated, Coinbase — a cryptocurrency exchange — ran a 60 second spot that featured a QR code bouncing around in a way reminiscent of old DVD screensavers. It was a roaring success.
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