What&#x27;s the procedure if you break or lose the FIDO hardware key? (Not a rhetorical question; I&#x27;d never heard of them before either.)<p>This is the sort of the thing I always worry about when discussing or considering strengthening security. At some point the risk of accidentally locking yourself out outweighs the risk of someone else getting in. Particularly so for something like gmail, where there&#x27;s no customer service as a last resort.