QR code
User support function that can read the barcode by smartphone. It includes the following information:
- Recipient address 
- Amount requested 
- Copy the QR code information, including the recipient's address and amount. 
- Share the QR code with multiple apps on the user's device. 
Step 3
- Click the share button (2) to share the payment request information with other apps on the user's device. 
Or
- Click the copy button (3) to copy the payment request information to the clipboard.    
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