Coldcard USB support

[nvk]

Coldcard USB support, here is the python module https://github.com/Coldcard/ckcc-protocol

[greenaddress]

@nvk I think for iOS this may not be in our control as you need to certify yourself with Apple for it to work. See https://mfi.apple.com/MFiWeb/getFAQ.action ?

You want to open the issue for Android though https://github.com/blockstream/green_android/issues

[nvk]

Sigh Apple, will look into it.

[nvk]

Looks like that link covers only Bluetooth accessories, we are a USB device with a standard HID profile.

[greenaddress]

@nvk I know only a little but everywhere I researched this (and discussion with other hw wallet manufacturers) it seems it requires Apple approval https://developer.apple.com/programs/mfi/

Bluetooth doesn't require apple permission for apps to use (not a bluetooth specific permission anyway, just vanilla store review procedures)