Replying to Avatar ShiShi21m

Secure elements are only beneficial because of the stateheld nature & airgapping with SD card isn't much different than USB.

The real innovation in PSBT was doing it through QR.

ALOT of people who own a CC end up plugging in via USB btw.
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ShiShi21m 1y ago

To achieve the same security assurances as QR you would need to use a new SD card for each & every transaction.

This has already been admitted by NVK btw.

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