OnlyKey: Open-Source Alternative to YubiKey
I honestly don't understand how a YubiKey is supposed to help me secure my accounts if I get locked out of my accounts when I lose it. I an trivially copy a keepass database anywhere and have dozens of backups. If I want to do the same with a YubiKey I first have to buy multiple YubiKeys and then I have to register each one on each site. This means they cannot be used as a primary authentication method because they always require a fallback option in case you want to reset your credentials because you lost your YubiKey. If I can't use the YubiKey to secure my E-Mail account then what's the point? I'll still  need to use password based login and store that E-Mail password in a conventional password manager that I then backup a dozen times.YubiKeys only seem to make sense in a corporate environment where you can always request a new YubiKey and reregister it based on your ID.