I also recommend Nitrokey. I have a Nitrokey Pro 2 and a Nitrokey 3 NFC and they both work well. Linux support is very good, and they also have good documentation on how to do most stuff you might want to do. +1 for being open-source as well.

Got it 🤖

Shouldn’t the second line be r²y = ln(x/m - sa)?

So, are you regretting it?

Internet access? Never. LAN access though is a different story altogether…