Thanks for the update! Is there also news about an application that can actually support ColdCard in an easy way with NFC signing?
I don't really know much infiormation about that, but you can ask NVK and coldcard team.
There are few videos Coinkite-Coldcard released on their youtube channel explaining how NFC feature works, showing address via NFC, and signing a text message using NFC.
BTC Sessions also released full 30 minute tutorial how to use Coldcard with NFC feature, so you can check out both of this channels.
https://www.youtube.com/watch?v=eLG8Atcd-l4https://www.youtube.com/channel/UCqMPBcyg_wemgvC1jDI3EIwThere are a few of "App Wallets" working on NFC support for both COLDCARD Mk4 and TAPSIGNER/SATSCARD. Like the years we had to push PSBT to be adopted, we expect NFC will take its time too. Not in a hurry. Nunchuk has integrated it well for both COLDCARD and TAPSIGNER/SATSCARD. It's working fairly well with the latest version and they keep on improving it.
Our approach to NFC is simple, almost anything you can do with the MicroSD/USB you can do with the NFC (signing, exporting data, etc...)
Cheers.