There are not many airgapped communication projects out there. Would you be willing to link to other projects in your readme? I found this list:

• Terminal based Possible successor for QRXfer leonjza/qrxfer#2
• Animated QR art TxQR support EFPrefix/EFQRCode#56
• Static QR Possible successor to file2qr JamesCullum/file2qr#1
• Possible successor to QRCV keith-turner/qrcv#1
• Possible successor to QrCodeTransfer cedricmartel/QrCodeTransfer#1
• A possible successor to QRstream xloem/qrstream#33
• Possible successor to cold-widow mihaigiurgeanu/cold-widow#2
• Possible Successor to QRCode Video CiscoCXSecurity/QRCode-Video-Data-Exfiltration#5
• https://github.com/anderson-/Eye-Fi/issues/2
• Possible successor to FlipQR huanghq/flipqr#1

Originally posted by @DonaldTsang in fionafibration/TXQR-Android#1 (comment)