How Long Until Facebook Takes a Blood Sample?

There's a ton of research going into this, into figuring out ways to create a real password. Things like gogold and a lot of other major systems now o off, or something called a two stage authentication. Systems like this have become the kind of the holy grail solution to adding at least one more bar to jump over. They're not a hundred % secure, but they're definitely far more secure. How long until facebook takes a blood sample? Good question.