One comment there asks:
Does anyone know of any Byzantine password systems? E.g. 3 or 5 online systems, where breaking any single system would not give the cracker all of your passwords. Ideally one might be LastPass, and the other 1Password - i.e. different companies - but even just multiple independent instances of the LastPass servers would provide some extra degree of security. // Possibly Byzantine for reliability as well as security.
That seems like a very interesting system. With lastpass and 1password protected by 2fa(Two-factor authentication), just knowing one won't divulge the other.
Does that actually make sense? Anyone tried that? Is this an actual system many people used?
I think one comment by @jak tells me what I mean
Maybe it means "n out of x" pieces would be needed to recover the full information, like 2-out-of-3 for key ABCDEF being split into ABCD, CDEF and EFAB
I want a system where the only way I lost access is if my computer and my head and my finger prints and my phone is gone suddenly. I want a system if I have 2 or 3 of them I can recover the rest. But a hacker need 2-3 of them. So a stable system that always give me an upper hand compared to hackers.
I do not think a hacker can easily get my computer and my password and my finger print. We're talking about James Bond kind of skill to get 3 factors. But I easily have that. If one day my fingers are gone, I still logged in from the same computer. So I have 3 factors again and insert a new finger print on file.