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Wikipedia and the general IT / Security industry would beg to differ:
An air-gapped computer or network is one that has no network interfaces, either wired or wireless, connected to outside networks.
While we're big fans of SeedQR, we don't know of any HWWs that can use QR codes to upgrade their firmware. Only microSD cards really allow this and it's what the SeedSigner uses too. We also consider SeedSigner to be fully air gapped.
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