Earlier quoted context omitted.
> ... the homeless will lose any physical thing after N weeks. So what kind of 2FA would be homeless-proof? I don't see a solution. How about the homeless person remembers a good password, and that's all that's needed for authentication? You know, just like it used to be. What exactly is wrong with that?
> How about the homeless person remembers a good password, and that's all that's needed for authentication? Gosh, I don't know, how about literally all of the problems that 2FA solves in the first place? Passwords alone are a bad solution (often forgotten, easily re-used insecurely) for people without all of the challenges and frequent mental issues that accompany homelessness, why would you think they'd be a good so…
Well, it isn't solving this one. Option to opt out would be nice.
> aren't capable of keeping track of a physical device for more than N weeks?
Bit ignorant of you. They could be just plainly stolen by someone else. A piece of rag working as a tent doesn't exactly have best physical security...
> I'm not unsympathetic to the problems of the homeless ant the burdens 2FA entails, but I'm also not willing to ignore the huge problems the 2FA solves, and realizing there will often be a tradeoff between making it very difficult to hack into accounts and making it easy for people with mental and other problems access their accounts.
It's not either or.