You can easily send and receive money using the QR Code.
To send money to one of your friends who has a sync. account, just get them to open the sync. app and tap the QR code tab at the bottom of the home screen. Simply scan it via the app and the transfer can be made immediately.
To receive money from one of your friends who has a sync. account, just show your QR code to complete the transfer.
Alternatively, you can also take a screenshot of the QR code, send and upload the image to make the transfer.