Unable to add a brand new Tapsigner

[ppppso]

Describe the bug
Unable to add a brand new Tapsigner

To Reproduce

1. Go to Keys/Add key/Add key from a hardware/Tapsigner
2. Enter pin code printed on the back
3. Scan the card via NFC
4. Error Unknown card protocol version is displayed and it's not possible to move forward

Expected behavior
It should be possible to add a brand new Tapsigner

Smartphone

• Device: Samsung
• OS: Android 14
• Bitcoin Keeper: 2.0

Additional context
The Tapsigner was working fine. I was able to successfully set it up in Nunchuk and, once setup, worked perfectly in Bitcoin Keeper.

[ben-kaufman]

Hi, thanks for reporting the issue.

I have tested with a new Tapsigner, but could not reproduce the issue. Can you please confirm if it was happening with various attempts or only once?

[ppppso]

I tried many times, restarted the app, the phone,... but always the same issue and could never finish the setup. I checked the card one more time and, while it was never used, I'm not sure if it's the latest model or not. The card says version 1.0.3.

[ben-kaufman]

Ok, thank you for confirming.

So the version 1.0.3 should work and we have tested with it. The error message you are sharing only occurs when the protocol version the card returns is invalid, but that is also checked after the setup process, so if it works after setting up the card it means the protocol version it returns was updated. Let me check with the Tapsigner code if there may be any step to update the protocol version on setup and I'll update here.

[ppppso]

My guess was that the app was expecting the protocol version and the Tapsigner was returning something else and thus failed. Maybe under some conditions the card behaves differently? In any case Nunchuk was able to handle the setup correctly so whatever it was must be something standard.