You can scan a QR code using the camera on your smartphone, tablet, or computer — however, you may need to download an app.
You’ve almost certainly used QR codes before—it’s when you point your phone’s camera at a square barcode to access a menu, a form, or even an app, and then tap on the link that appears. But while most ...
You can add new contacts to WhatsApp manually from the Chats tab or you can scan someone's QR code within the app.
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