I was investigating the use of Hardware Security Modules (HSMs) to better secure some stuff at work. Our choice was a Nitrokey HSM 2 for its convenient price, features and open approach, including hardware. Unfortunately Nitrokeys's documentation is sparse at best and there is not much available documentation online to guide new users to get HSMs to work with GnuPG (GPG): it's even the opposite with some forum posts indicating that the Nitrokey HSM 2 is not compatible with GPG.
From what seems to be the current state of things, GPG works out of the box with OpenPGP cards (which are
