> But to have this level of security requires extra work, and part of that work is regularly testing that the keys still work. This is a late reply, but thanks

> But to have this level of security requires extra work, and part of that work is regularly testing that the keys still work. This is a late reply, but thanks for your detailed response. I agree that this requires extra work, and that it is important. But the cost of multiple hardware keys also add up. So I doubt if this is a solution for the masses (of course, I'm not implying that anyone who's concerned about losing an account shouldn't spend some money and time). If you do see this reply, I'd like to know the other vendors (apart from Yubico) whose keys you use.