Coinbase's strange QR-code Super Bowl ad briefly crashes app
Coinbase: Bizarre QR code Super Bowl ad crashes cryptocurrency exchange
QR codes: Is it safe to scan?
Coinbase's Mystery QR Code Super Bowl Ad Is a Security Nightmare
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Coinbase's Mystery QR Code Super Bowl Ad Is a Security Nightmare
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Coinbase's strange QR-code Super Bowl ad briefly crashes app
The blessing and curse of QR Codes
Coinbase's bouncing QR code Super Bowl ad was so popular it crashed the app : r/technology