Send a file
Pick a file on this device and play it as a stream of QR codes.
Receive a file
Point this device's camera at the codes and collect the file.
File transfer over QR codes
Send a file between two devices with no network, no cable and no account. One screen plays QR codes, the other device's camera reads them back.
Pick a file on this device and play it as a stream of QR codes.
Point this device's camera at the codes and collect the file.