These days people in a lot of places need a health certificate to enter establishments such as restaurants, gyms and congress centers, and for that we need to have the QR code, proving its authenticity on our mobile phones. But having it displayed on the display is too pedestrian - how about having it engraved on the phone's back instead? Caviar, the luxury gadgets brand, is now offering a Digital Signature collection of products, which can put a QR code made out of pure 18K gold on the back of an iPhone 13 Pro. The code can lead to business cards, websites, social media handles or...
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