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• #2
It should be... That nRF52 link may build pretty easily for Puck.js if you just change a few pin names around.
Realistically you probably want to flash the Puck via the SWD pins though - trying to upload via bluetooth will probably result in a bricked Puck (until you reflash it via SWD)
Should it be possible to turn the Puck into an Fido2/U2F device?
I found this
https://wiki.makerdiary.com/nrf52-u2f/building/
and this
https://github.com/uru-card/uru-card