Nitrokey 3A, NFC and CalyxOS

Nitrokeys
1

I have a Fairphone 5 running CalyxOS. I would like to use the Nitrokey 3A as 2FA security key for github/gitlab using NFC. Unfortunately, it doesn’t work. I see the animation telling me to hold the Nitrokey to the back of the smartphone. When I do this, I notice that the smartphone vibrates. But then nothing happens. Basically, NFC seems to work. If I hold the Nitrokey to the smartphone when the home screen is displayed, for example, the browser opens and I get to the Nitrokey website. The ‘NFC Tools’ app also recognizes the Nitrokey and shows me information about it. I’m not sure if it might be due to the limitations of the CalyxOS. Does this combination perhaps work for someone? (NK3 uses firmware version 1.7.2, FP5 uses CalyxOS 5.11.3 with Android 14)

2

Do you habe Google Play Services installed? At least with GrapheneOS this is a prerequisite.

Sandboxed Google Play is required for practically most FIDO2 functionality, because there is currently no native FIDO2 support in AOSP. There are some services that use their own implementation or utilize third-party APIs for FIDO2 support, but as far as I know there are very few that do this.

3

Well, I do have microG installed. And I think this has been implemented (#849).