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Thanks for your question — and it’s a good one.
No, I’m not using QR codes or camera scanning between devices.
What I’m building is not a cold-wallet model or standard airgapped QR flow. It’s something more direct and unconventional, where data is exchanged between devices without traditional I/O or connectivity (no QR, no Bluetooth, no NFC, no Wi-Fi).
The fact that the transaction is valid is just a byproduct — the real innovation is in how the TX gets from device A to B. and it gets Globally! not like 10 meters away!
No offense, but from my perspective it's either have limited practicality, fictional or revolutionary.
I understand your point — but I’d argue that “offline TX” usually means just signing offline and broadcasting later. What I’ve done includes transmission too — without any external connection.
That’s what I believe is the novelty here.
My point is those points aren't exactly "Key features" or outstanding compared with today's offline signing.