It also works over usb. SD card is better security though.
Discussion
My mistake! Sorry about that.
Coldcard also only works with the PSBT standard. How you use a Ledger depends on how your wallet has implemented the Ledger integration, or if you are using Ledger’s native wallet software. Greater opportunity for things to go wrong with a Ledger since it’s supporting more formats than just the PSBT standard.
The market will sort it out. 🤷🏼♂️
QR is even better security - akin to using a new SD card for every transaction.
If you can use qr code on coldcard mk4 why even own 9volt battery, SD card etc?
No you can't,
SeedSigner & Foundation you can.
Is this not the cold card doing QR code?
This is from one year ago, so the UX has improved 100x but this is what I'm talking about.
Thanks, I don't know if my link went through earlier. I think this is the coldcard also doing that?