4 ms·And multiple security keys at that! This is excellent.by SEJeff 7y agoAnd multiple security keys at that! This is excellent.taeric 7y agoThe fact that twitter is restricted to a single key is mind boggling to me. Is that a common restriction elsewhere?SEJeff 7y agoYes, there are precious few places that support sensible hw MFA and allow multiple of them to be registered. It is quite maddening actually.