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* https://www.nordicsemi.com/Products/Development-hardware/nRF... Only 10 bucks and can run OpenSK/Tock, FIDO2 code, among other things. This way you save money and learn something.

This is interesting.

Newb question, how do use opensk/tock as an hsm? A quick search points back at this thread.

If you have to ask that question it's probably better to start here: https://www.picokeys.com/pico-hsm/